diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITAuthTests.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITAuthTests.java
index 0877553e42c0..1d6bac0cd257 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITAuthTests.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITAuthTests.java
@@ -90,7 +90,7 @@ public void testValidServiceAccountAuthentication() throws SQLException, IOExcep
     Files.write(tempFile.toPath(), authJson.toString().getBytes());
 
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
+        getBaseConnectionUrl()
             + "ProjectId="
             + authJson.get("project_id").getAsString()
             + ";OAuthType=0;"
@@ -104,11 +104,7 @@ public void testValidServiceAccountAuthentication() throws SQLException, IOExcep
 
   @Test
   public void testServiceAccountAuthenticationMissingOAuthPvtKeyPath() throws SQLException {
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";OAuthType=0;";
+    String connection_uri = getBaseConnectionUrl() + "ProjectId=" + PROJECT_ID + ";OAuthType=0;";
 
     try {
       DriverManager.getConnection(connection_uri);
@@ -127,7 +123,7 @@ public void testValidServiceAccountAuthenticationOAuthPvtKeyAsPath()
     Files.write(tempFile.toPath(), authJson.toString().getBytes());
 
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
+        getBaseConnectionUrl()
             + "ProjectId="
             + authJson.get("project_id").getAsString()
             + ";OAuthType=0;"
@@ -144,7 +140,7 @@ public void testValidServiceAccountAuthenticationViaEmailAndPkcs8Key()
     final JsonObject authJson = getAuthJson();
 
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
+        getBaseConnectionUrl()
             + "ProjectId="
             + authJson.get("project_id").getAsString()
             + ";OAuthType=0;"
@@ -162,7 +158,7 @@ public void testValidServiceAccountAuthenticationOAuthPvtKeyAsJson()
     final JsonObject authJson = getAuthJson();
 
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
+        getBaseConnectionUrl()
             + "ProjectId="
             + authJson.get("project_id").getAsString()
             + ";OAuthType=0;"
@@ -192,9 +188,12 @@ public void testValidServiceAccountAuthenticationP12() throws SQLException, IOEx
   @Disabled
   public void testValidGoogleUserAccountAuthentication() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
+        getBaseConnectionUrl()
+            + "PROJECTID="
             + PROJECT_ID
-            + ";OAuthType=1;OAuthClientId=client_id;OAuthClientSecret=client_secret;";
+            + ";OAuthType=1;"
+            + "OAuthClientId=client_id;"
+            + "OAuthClientSecret=client_secret;";
 
     Connection connection = DriverManager.getConnection(connection_uri);
     assertNotNull(connection);
@@ -213,12 +212,15 @@ public void testValidGoogleUserAccountAuthentication() throws SQLException {
   @Disabled
   public void testValidExternalAccountAuthentication() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
+        getBaseConnectionUrl()
+            + "PROJECTID="
             + PROJECT_ID
             + ";OAUTHTYPE=4;"
             + "BYOID_AudienceUri=//iam.googleapis.com/projects/<project>/locations/<location>/workloadIdentityPools/<pool>/providers/<provider>;"
-            + "BYOID_SubjectTokenType=<type>;BYOID_CredentialSource={\"file\":\"/path/to/file\"};"
-            + "BYOID_SA_Impersonation_Uri=<sa>;BYOID_TokenUri=<uri>;";
+            + "BYOID_SubjectTokenType=<type>;"
+            + "BYOID_CredentialSource={\"file\":\"/path/to/file\"};"
+            + "BYOID_SA_Impersonation_Uri=<sa>;"
+            + "BYOID_TokenUri=<uri>;";
 
     Connection connection = DriverManager.getConnection(connection_uri);
     assertNotNull(connection);
@@ -237,7 +239,8 @@ public void testValidExternalAccountAuthentication() throws SQLException {
   @Disabled
   public void testValidExternalAccountAuthenticationFromFile() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
+        getBaseConnectionUrl()
+            + "PROJECTID="
             + PROJECT_ID
             + ";OAUTHTYPE=4;"
             + "OAuthPvtKeyPath=/path/to/file;";
@@ -259,9 +262,11 @@ public void testValidExternalAccountAuthenticationFromFile() throws SQLException
   @Disabled
   public void testValidExternalAccountAuthenticationRawJson() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
+        getBaseConnectionUrl()
+            + "PROJECTID="
             + PROJECT_ID
-            + ";OAUTHTYPE=4;OAuthPvtKey={\n"
+            + ";OAUTHTYPE=4;"
+            + "OAuthPvtKey={\n"
             + "  \"universe_domain\": \"googleapis.com\",\n"
             + "  \"type\": \"external_account\",\n"
             + "  \"audience\":"
@@ -303,7 +308,8 @@ public void testValidPreGeneratedAccessTokenAuthentication(String scope, boolean
     String accessToken = credentials.getAccessToken().getTokenValue();
 
     String connectionUri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId="
+        getBaseConnectionUrl()
+            + "ProjectId="
             + authJson.get("project_id").getAsString()
             + ";OAuthType=2"
             + ";OAuthAccessToken="
@@ -319,10 +325,13 @@ public void testValidPreGeneratedAccessTokenAuthentication(String scope, boolean
   @Disabled
   public void testValidRefreshTokenAuthentication() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
+        getBaseConnectionUrl()
+            + "PROJECTID="
             + PROJECT_ID
-            + ";OAUTHTYPE=2;OAuthRefreshToken=refresh_token;"
-            + ";OAuthClientId=client;OAuthClientSecret=secret;";
+            + ";OAUTHTYPE=2;"
+            + "OAuthRefreshToken=refresh_token;"
+            + ";OAuthClientId=client;"
+            + "OAuthClientSecret=secret;";
 
     Connection connection = DriverManager.getConnection(connection_uri);
     assertNotNull(connection);
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBase.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBase.java
index 5b4d36fac4fe..5b6377f6f885 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBase.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBase.java
@@ -23,6 +23,7 @@
 import com.google.cloud.bigquery.BigQueryOptions;
 import com.google.cloud.bigquery.QueryJobConfiguration;
 import com.google.cloud.bigquery.jdbc.BigQueryJdbcBaseTest;
+import com.google.cloud.bigquery.jdbc.utils.TestUtilities;
 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -177,10 +178,13 @@ private static void registerShutdownHook(final String dataset) {
   }
 
   public static final String DEFAULT_CATALOG = ServiceOptions.getDefaultProjectId();
+
+  public static String getBaseConnectionUrl() {
+    return TestUtilities.getBaseConnectionUrl();
+  }
+
   public static String connectionUrl =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId="
-          + DEFAULT_CATALOG
-          + ";OAuthType=3;Timeout=3600;";
+      getBaseConnectionUrl() + "ProjectId=" + DEFAULT_CATALOG + ";OAuthType=3;Timeout=3600;";
 
   public static final String createDatasetQuery =
       "CREATE SCHEMA IF NOT EXISTS `%s.%s` OPTIONS(default_table_expiration_days = 5)";
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBigQueryJDBCTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBigQueryJDBCTest.java
index 9fe1c4f0f2fc..44a8160f726d 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBigQueryJDBCTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITBigQueryJDBCTest.java
@@ -64,11 +64,8 @@
 
 public class ITBigQueryJDBCTest extends ITBase {
   static final String PROJECT_ID = ServiceOptions.getDefaultProjectId();
-  static final String connection_uri =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-          + PROJECT_ID
-          + ";OAUTHTYPE=3";
-  static final String session_enabled_connection_uri = connection_uri + ";EnableSession=1";
+  static final String connection_uri = ITBase.connectionUrl;
+  static final String session_enabled_connection_uri = connection_uri + "EnableSession=1;";
   private static final String BASE_QUERY =
       "SELECT * FROM bigquery-public-data.new_york_taxi_trips.tlc_yellow_trips_2017 order by"
           + " trip_distance asc LIMIT %s";
@@ -109,10 +106,8 @@ public void testValidAllDataTypesSerializationFromSelectQueryArrowDataset() thro
     String TABLE_NAME = "JDBC_INTEGRATION_ARROW_TEST_TABLE";
     String selectQuery = "select * from " + DATASET + "." + TABLE_NAME + " LIMIT 5000;";
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + DEFAULT_CATALOG
-            + ";EnableHighThroughputAPI=1;"
+        ITBigQueryJDBCTest.connection_uri
+            + "EnableHighThroughputAPI=1;"
             + "HighThroughputActivationRatio=2;"
             + "HighThroughputMinTableSize=1000;";
 
@@ -240,10 +235,11 @@ public void testReadAPIPathLarge() throws SQLException {
   @Test
   public void testReadAPIPathLargeWithThresholdParameters() throws SQLException {
     String connectionUri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + DEFAULT_CATALOG
-            + ";OAUTHTYPE=3;MaxResults=300;HighThroughputActivationRatio=2;"
-            + "HighThroughputMinTableSize=100;EnableHighThroughputAPI=1";
+        ITBigQueryJDBCTest.connection_uri
+            + "MaxResults=300;"
+            + "HighThroughputActivationRatio=2;"
+            + "HighThroughputMinTableSize=100;"
+            + "EnableHighThroughputAPI=1";
     Connection connection = DriverManager.getConnection(connectionUri);
     Statement statement = connection.createStatement();
     int expectedCnt = 1000;
@@ -257,10 +253,10 @@ public void testReadAPIPathLargeWithThresholdParameters() throws SQLException {
   @Test
   public void testReadAPIPathLargeWithThresholdNotMet() throws SQLException {
     String connectionUri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + DEFAULT_CATALOG
-            + ";OAUTHTYPE=3;HighThroughputActivationRatio=4;"
-            + "HighThroughputMinTableSize=100;EnableHighThroughputAPI=1";
+        ITBigQueryJDBCTest.connection_uri
+            + "HighThroughputActivationRatio=4;"
+            + "HighThroughputMinTableSize=100;"
+            + "EnableHighThroughputAPI=1";
     Connection connection = DriverManager.getConnection(connectionUri);
     Statement statement = connection.createStatement();
     int expectedCnt = 5000;
@@ -305,10 +301,7 @@ public void testInvalidQuery() throws SQLException {
 
   @Test
   public void testDriver() throws SQLException {
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri;
 
     Driver driver = BigQueryDriver.getRegisteredDriver();
     assertTrue(driver.acceptsURL(connection_uri));
@@ -323,10 +316,7 @@ public void testDriver() throws SQLException {
 
   @Test
   public void testDefaultDataset() throws SQLException {
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;DEFAULTDATASET=testDataset";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri + "DEFAULTDATASET=testDataset";
 
     Driver driver = BigQueryDriver.getRegisteredDriver();
     assertTrue(driver.acceptsURL(connection_uri));
@@ -337,10 +327,7 @@ public void testDefaultDataset() throws SQLException {
         DatasetId.of("testDataset"),
         connection.unwrap(BigQueryConnection.class).getDefaultDataset());
 
-    String connection_uri_null_default_dataset =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3";
+    String connection_uri_null_default_dataset = ITBigQueryJDBCTest.connection_uri;
 
     assertTrue(driver.acceptsURL(connection_uri_null_default_dataset));
 
@@ -354,11 +341,7 @@ public void testDefaultDataset() throws SQLException {
   @Test
   public void testDefaultDatasetWithProject() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;DEFAULTDATASET="
-            + PROJECT_ID
-            + ".testDataset";
+        ITBigQueryJDBCTest.connection_uri + "DEFAULTDATASET=" + PROJECT_ID + ".testDataset";
 
     Driver driver = BigQueryDriver.getRegisteredDriver();
     assertTrue(driver.acceptsURL(connection_uri));
@@ -373,10 +356,7 @@ public void testDefaultDatasetWithProject() throws SQLException {
 
   @Test
   public void testLocation() throws SQLException {
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;LOCATION=EU";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri + "LOCATION=EU";
 
     Driver driver = BigQueryDriver.getRegisteredDriver();
     assertTrue(driver.acceptsURL(connection_uri));
@@ -392,10 +372,7 @@ public void testLocation() throws SQLException {
     ResultSet resultSet = statement.executeQuery(query);
     assertEquals(100, resultSetRowCount(resultSet));
 
-    String connection_uri_null_location =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3";
+    String connection_uri_null_location = ITBigQueryJDBCTest.connection_uri;
 
     assertTrue(driver.acceptsURL(connection_uri_null_location));
 
@@ -408,10 +385,7 @@ public void testLocation() throws SQLException {
 
   @Test
   public void testIncorrectLocation() throws SQLException {
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;LOCATION=europe-west3";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri + "LOCATION=europe-west3";
 
     Driver driver = BigQueryDriver.getRegisteredDriver();
 
@@ -1291,12 +1265,13 @@ public void testAllValidStatementTypesForAddBatch() throws SQLException {
   public void testUnsupportedHTAPIFallbacksToStandardQueriesWithRange() throws SQLException {
     String selectQuery = "select * from `DATATYPERANGETEST.RangeIntervalTestTable` LIMIT 5000;";
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";MaxResults=500;HighThroughputActivationRatio=1;"
+        ITBigQueryJDBCTest.connection_uri
+            + "MaxResults=500;"
+            + "HighThroughputActivationRatio=1;"
             + "HighThroughputMinTableSize=100;"
-            + "EnableHighThroughputAPI=1;UnsupportedHTAPIFallback=1;JobCreationMode=1;";
+            + "EnableHighThroughputAPI=1;"
+            + "UnsupportedHTAPIFallback=1;"
+            + "JobCreationMode=1;";
 
     // Read data via JDBC
     Connection connection = DriverManager.getConnection(connection_uri);
@@ -1315,12 +1290,12 @@ public void testIntervalDataTypeWithArrowResultSet() throws SQLException {
     String selectQuery =
         "select * from `DATATYPERANGETEST.RangeIntervalTestTable` order by intColumn limit 5000;";
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";MaxResults=500;HighThroughputActivationRatio=0;"
+        ITBigQueryJDBCTest.connection_uri
+            + "MaxResults=500;"
+            + "HighThroughputActivationRatio=0;"
             + "HighThroughputMinTableSize=100;"
-            + "EnableHighThroughputAPI=1;JobCreationMode=1;";
+            + "EnableHighThroughputAPI=1;"
+            + "JobCreationMode=1;";
 
     // Read data via JDBC
     Connection connection = DriverManager.getConnection(connection_uri);
@@ -1340,12 +1315,12 @@ public void testIntervalDataTypeWithJsonResultSet() throws SQLException {
     String selectQuery =
         "select * from `DATATYPERANGETEST.RangeIntervalTestTable` order by intColumn limit 10 ;";
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";MaxResults=500;HighThroughputActivationRatio=1;"
+        ITBigQueryJDBCTest.connection_uri
+            + "MaxResults=500;"
+            + "HighThroughputActivationRatio=1;"
             + "HighThroughputMinTableSize=100;"
-            + "EnableHighThroughputAPI=0;JobCreationMode=1;";
+            + "EnableHighThroughputAPI=0;"
+            + "JobCreationMode=1;";
 
     // Read data via JDBC
     Connection connection = DriverManager.getConnection(connection_uri);
@@ -1366,11 +1341,7 @@ public void testValidLEPEndpointQuery() throws SQLException {
     String TABLE_NAME = "REGIONAL_TABLE";
     String selectQuery = "select * from " + DATASET + "." + TABLE_NAME;
     String connection_uri =
-        "jdbc:bigquery://https://googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";"
+        ITBigQueryJDBCTest.connection_uri
             + "EndpointOverrides=BIGQUERY=https://us-east4-bigquery.googleapis.com;";
 
     // Read data via JDBC
@@ -1386,11 +1357,7 @@ public void testValidEndpointWithInvalidBQPortThrows() throws SQLException {
     String TABLE_NAME = "JDBC_REGIONAL_TABLE_" + randomNumber;
     String selectQuery = "select * from " + DATASET + "." + TABLE_NAME;
     String connection_uri =
-        "jdbc:bigquery://https://googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";"
+        ITBigQueryJDBCTest.connection_uri
             + "EndpointOverrides=BIGQUERY=https://us-east4-bigquery.googleapis.com:12312312;";
 
     // Read data via JDBC
@@ -1406,11 +1373,7 @@ public void testLEPEndpointDataNotFoundThrows() throws SQLException {
     String TABLE_NAME = "REGIONAL_TABLE";
     String selectQuery = "select * from " + DATASET + "." + TABLE_NAME;
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";"
+        ITBigQueryJDBCTest.connection_uri
             + "EndpointOverrides=BIGQUERY=https://us-east5-bigquery.googleapis.com;";
 
     // Attempting read data via JDBC
@@ -1426,11 +1389,7 @@ public void testValidREPEndpointQuery() throws SQLException {
     String TABLE_NAME = "REGIONAL_TABLE";
     String selectQuery = "select * from " + DATASET + "." + TABLE_NAME;
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";"
+        ITBigQueryJDBCTest.connection_uri
             + "EndpointOverrides=BIGQUERY=https://bigquery.us-east4.rep.googleapis.com;";
 
     // Read data via JDBC
@@ -1447,11 +1406,7 @@ public void testREPEndpointDataNotFoundThrows() throws SQLException {
     String TABLE_NAME = "REGIONAL_TABLE";
     String selectQuery = "select * from " + DATASET + "." + TABLE_NAME;
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";"
+        ITBigQueryJDBCTest.connection_uri
             + "EndpointOverrides=BIGQUERY=https://bigquery.us-east7.rep.googleapis.com;";
 
     // Attempting read data via JDBC
@@ -1527,7 +1482,7 @@ public void testConnectionIsValid() throws SQLException {
   @Test
   public void testDataSource() throws SQLException {
     DataSource ds = new DataSource();
-    ds.setURL("jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;");
+    ds.setURL(getBaseConnectionUrl());
     ds.setOAuthType(3);
 
     try (Connection connection = ds.getConnection()) {
@@ -1540,7 +1495,7 @@ public void testDataSourceOAuthPvtKeyPath() throws SQLException, IOException {
     File tempFile = File.createTempFile("auth", ".json");
     tempFile.deleteOnExit();
     DataSource ds = new DataSource();
-    ds.setURL("jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;");
+    ds.setURL(getBaseConnectionUrl());
     ds.setOAuthType(0);
     ds.setOAuthPvtKeyPath(tempFile.toPath().toString());
     assertEquals(0, ds.getOAuthType().intValue());
@@ -1697,11 +1652,8 @@ public void testPreparedStatementDateTimeValues() throws SQLException {
   public void testValidDestinationTableSavesQueriesWithLegacySQL() throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=BIG_QUERY;"
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryDialect=BIG_QUERY;"
             + "AllowLargeResults=1;"
             + "LargeResultTable=destination_table_test_legacy;"
             + "LargeResultDataset=INTEGRATION_TESTS;";
@@ -1729,12 +1681,7 @@ public void testValidDestinationTableSavesQueriesWithLegacySQL() throws SQLExcep
   @Test
   public void testNonEnabledUseLegacySQLThrowsSyntaxError() throws SQLException {
     // setup
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + DEFAULT_CATALOG
-            + ";";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri;
     String selectLegacyQuery =
         "SELECT * FROM [bigquery-public-data.deepmind_alphafold.metadata] LIMIT 20000000;";
     Connection connection = DriverManager.getConnection(connection_uri, new Properties());
@@ -1749,11 +1696,7 @@ public void testNonEnabledUseLegacySQLThrowsSyntaxError() throws SQLException {
   public void testUseLegacySQLWithLargeResultsNotAllowedQueries() throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + DEFAULT_CATALOG
-            + ";QueryDialect=BIG_QUERY;AllowLargeResults=0;";
+        ITBigQueryJDBCTest.connection_uri + "QueryDialect=BIG_QUERY;" + "AllowLargeResults=0;";
     String selectLegacyQuery =
         "SELECT * FROM [bigquery-public-data.deepmind_alphafold.metadata] LIMIT 250000;";
     Connection connection = DriverManager.getConnection(connection_uri, new Properties());
@@ -1771,11 +1714,8 @@ public void testUseLegacySQLWithLargeResultsNotAllowedQueries() throws SQLExcept
   public void testValidDestinationTableSavesQueriesWithStandardSQL() throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=SQL;"
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryDialect=SQL;"
             + "LargeResultTable=destination_table_test;"
             + "LargeResultDataset=INTEGRATION_TESTS;";
     String selectLegacyQuery =
@@ -1804,11 +1744,8 @@ public void testDestinationTableAndDestinationDatasetThatDoesNotExistsCreates()
       throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=BIG_QUERY;"
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryDialect=BIG_QUERY;"
             + "AllowLargeResults=1;"
             + "LargeResultTable=FakeTable;"
             + "LargeResultDataset=FakeDataset;";
@@ -1837,11 +1774,7 @@ public void testUseLegacySQLWithLargeResultsAllowedWithNoDestinationTableDefault
       throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + DEFAULT_CATALOG
-            + ";QueryDialect=BIG_QUERY;AllowLargeResults=1;";
+        ITBigQueryJDBCTest.connection_uri + "QueryDialect=BIG_QUERY;" + "AllowLargeResults=1;";
     String selectLegacyQuery =
         "SELECT * FROM [bigquery-public-data.deepmind_alphafold.metadata] LIMIT 250000;";
     Connection connection = DriverManager.getConnection(connection_uri, new Properties());
@@ -1859,11 +1792,8 @@ public void testUseLegacySQLWithLargeResultsAllowedWithNoDestinationTableDefault
   public void testDestinationTableWithMissingDestinationDatasetDefaults() throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=BIG_QUERY;"
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryDialect=BIG_QUERY;"
             + "AllowLargeResults=1;"
             + "LargeResultTable=FakeTable;";
     String selectLegacyQuery =
@@ -1892,11 +1822,8 @@ public void testNonSelectForLegacyDestinationTableThrows() throws SQLException {
             "CREATE OR REPLACE TABLE %s.%s (`id` INTEGER, `name` STRING, `age` INTEGER);",
             DATASET, TRANSACTION_TABLE);
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=BIG_QUERY;"
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryDialect=BIG_QUERY;"
             + "AllowLargeResults=1;"
             + "LargeResultTable=destination_table_test;"
             + "LargeResultDataset=INTEGRATION_TESTS;";
@@ -1918,11 +1845,8 @@ public void testNonSelectForStandardDestinationTableDoesNotThrow() throws SQLExc
             "CREATE OR REPLACE TABLE %s.%s (`id` INTEGER, `name` STRING, `age` INTEGER);",
             DATASET, TRANSACTION_TABLE);
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=SQL;"
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryDialect=SQL;"
             + "AllowLargeResults=1;"
             + "LargeResultTable=destination_table_test;"
             + "LargeResultDataset=INTEGRATION_TESTS;";
@@ -2001,12 +1925,12 @@ public void testRangeDataTypeWithArrowResultSet() throws SQLException {
         "select * from `DATATYPERANGETEST.RangeIntervalTestTable` order by intColumn limit 5000;";
 
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";MaxResults=500;HighThroughputActivationRatio=0;"
+        ITBigQueryJDBCTest.connection_uri
+            + "MaxResults=500;"
+            + "HighThroughputActivationRatio=0;"
             + "HighThroughputMinTableSize=100;"
-            + "EnableHighThroughputAPI=1;JobCreationMode=1;";
+            + "EnableHighThroughputAPI=1;"
+            + "JobCreationMode=1;";
 
     // Read data via JDBC
     Connection connection = DriverManager.getConnection(connection_uri);
@@ -2052,11 +1976,8 @@ public void testAlterTable() throws SQLException {
 
   public void testQueryPropertyDataSetProjectIdQueriesToCorrectDataset() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryProperties=dataset_project_id="
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryProperties=dataset_project_id="
             + PROJECT_ID
             + ";";
     String insertQuery =
@@ -2087,11 +2008,8 @@ public void testQueryPropertyDataSetProjectIdQueriesToCorrectDataset() throws SQ
   public void testQueryPropertyDataSetProjectIdQueriesToIncorrectDatasetThrows()
       throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryProperties=dataset_project_id=bigquerytestdefault"
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryProperties=dataset_project_id=bigquerytestdefault"
             + ";";
     String insertQuery =
         String.format(
@@ -2109,11 +2027,7 @@ public void testQueryPropertyDataSetProjectIdQueriesToIncorrectDatasetThrows()
   @Test
   public void testQueryPropertyTimeZoneQueries() throws SQLException {
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryProperties=time_zone=America/New_York;";
+        ITBigQueryJDBCTest.connection_uri + "QueryProperties=time_zone=America/New_York;";
     String query = "SELECT * FROM `bigquery-public-data.samples.shakespeare` LIMIT 180";
     Driver driver = BigQueryDriver.getRegisteredDriver();
     Connection connection = driver.connect(connection_uri, new Properties());
@@ -2133,13 +2047,7 @@ public void testQueryPropertySessionIdSetsStatementSession()
       throws SQLException, InterruptedException {
     String sessionId = getSessionId();
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryProperties=session_id="
-            + sessionId
-            + ";";
+        ITBigQueryJDBCTest.connection_uri + "QueryProperties=session_id=" + sessionId + ";";
     String selectQuery =
         "INSERT INTO `bigquery-devtools-drivers.JDBC_INTEGRATION_DATASET.No_KMS_Test_table` (id,"
             + " name, age) VALUES (132, 'Batman', 531);";
@@ -2164,14 +2072,7 @@ public void testQueryPropertySessionIdSetsStatementSession()
   public void testEncryptedTableWithKmsQueries() throws SQLException {
     // setup
     String KMSKeyName = requireEnvVar("KMS_RESOURCE_PATH");
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";KMSKeyName="
-            + KMSKeyName
-            + ";";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri + "KMSKeyName=" + KMSKeyName + ";";
     String selectQuery = "SELECT * FROM `JDBC_INTEGRATION_DATASET.KMS_Test_table`;";
     Driver driver = BigQueryDriver.getRegisteredDriver();
     Connection connection = driver.connect(connection_uri, new Properties());
@@ -2190,14 +2091,7 @@ public void testEncryptedTableWithKmsQueries() throws SQLException {
   @Test
   public void testIncorrectKmsThrows() throws SQLException {
     String KMSKeyName = requireEnvVar("KMS_RESOURCE_PATH");
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";KMSKeyName="
-            + KMSKeyName
-            + ";";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri + "KMSKeyName=" + KMSKeyName + ";";
     String selectQuery =
         "INSERT INTO `bigquery-devtools-drivers.JDBC_INTEGRATION_DATASET.No_KMS_Test_table` (id,"
             + " name, age) VALUES (132, 'Batman', 531);";
@@ -2214,11 +2108,8 @@ public void testIncorrectKmsThrows() throws SQLException {
   public void testQueryPropertyServiceAccountFollowsIamPermission() throws SQLException {
     final String SERVICE_ACCOUNT_EMAIL = requireEnvVar("SA_EMAIL");
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryProperties=service_account="
+        ITBigQueryJDBCTest.connection_uri
+            + "QueryProperties=service_account="
             + SERVICE_ACCOUNT_EMAIL
             + ";";
     Driver driver = BigQueryDriver.getRegisteredDriver();
@@ -2242,11 +2133,7 @@ public void testValidLegacySQLStatement() throws SQLException {
             + "FROM\n"
             + "  [bigquery-public-data.github_repos.commits],\n"
             + "  [bigquery-public-data.github_repos.sample_commits] LIMIT 10";
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=BIG_QUERY;";
+    String connection_uri = ITBigQueryJDBCTest.connection_uri + "QueryDialect=BIG_QUERY;";
     Connection connection = DriverManager.getConnection(connection_uri);
     Statement statement = connection.createStatement();
 
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITCallableStatementTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITCallableStatementTest.java
index cbd128a818f1..d70f0cb77a9b 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITCallableStatementTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITCallableStatementTest.java
@@ -48,10 +48,7 @@
 
 public class ITCallableStatementTest extends ITBase {
   static final String PROJECT_ID = ServiceOptions.getDefaultProjectId();
-  static final String connection_uri =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-          + PROJECT_ID
-          + ";OAUTHTYPE=3";
+  static final String connection_uri = ITBase.connectionUrl;
   private static final Random random = new Random();
   private static String DATASET;
   private static final String CALLABLE_STMT_PROC_NAME = "IT_CALLABLE_STMT_PROC_TEST";
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionPoolingTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionPoolingTest.java
index 6f3b5ca43926..0da773d7c965 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionPoolingTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionPoolingTest.java
@@ -43,8 +43,7 @@ public class ITConnectionPoolingTest extends ITBase {
 
   @Test
   public void testPooledConnectionDataSourceSuccess() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -62,9 +61,7 @@ public void testPooledConnectionDataSourceFailNoConnectionURl() {
 
   @Test
   public void testPooledConnectionDataSourceFailInvalidConnectionURl() {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;"
-            + "ListenerPoolSize=invalid";
+    String connectionUrl = ITBase.connectionUrl + "ListenerPoolSize=invalid;";
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
 
@@ -73,8 +70,7 @@ public void testPooledConnectionDataSourceFailInvalidConnectionURl() {
 
   @Test
   public void testPooledConnectionAddConnectionListener() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -89,8 +85,7 @@ public void testPooledConnectionAddConnectionListener() throws SQLException {
 
   @Test
   public void testPooledConnectionRemoveConnectionListener() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -105,8 +100,7 @@ public void testPooledConnectionRemoveConnectionListener() throws SQLException {
 
   @Test
   public void testPooledConnectionConnectionClosed() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -129,8 +123,7 @@ public void testPooledConnectionConnectionClosed() throws SQLException {
 
   @Test
   public void testPooledConnectionClose() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -149,8 +142,7 @@ public void testPooledConnectionClose() throws SQLException {
 
   @Test
   public void testPooledConnectionConnectionError() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -178,8 +170,7 @@ public void testPooledConnectionConnectionError() throws SQLException {
 
   @Test
   public void testPooledConnectionListenerAddListener() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -194,8 +185,7 @@ public void testPooledConnectionListenerAddListener() throws SQLException {
 
   @Test
   public void testPooledConnectionListenerRemoveListener() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -213,8 +203,7 @@ public void testPooledConnectionListenerRemoveListener() throws SQLException {
 
   @Test
   public void testPooledConnectionListenerCloseConnection() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -236,8 +225,7 @@ public void testPooledConnectionListenerCloseConnection() throws SQLException {
 
   @Test
   public void testPooledConnectionListenerClosePooledConnection() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -254,8 +242,7 @@ public void testPooledConnectionListenerClosePooledConnection() throws SQLExcept
 
   @Test
   public void testPooledConnectionListenerConnectionError() throws SQLException {
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;OAuthType=3;ProjectId=testProject;ConnectionPoolSize=20;ListenerPoolSize=20;";
+    String connectionUrl = ITBase.connectionUrl + "ConnectionPoolSize=20;" + "ListenerPoolSize=20;";
 
     PooledConnectionDataSource pooledDataSource = new PooledConnectionDataSource();
     pooledDataSource.setURL(connectionUrl);
@@ -281,24 +268,15 @@ public void testPooledConnectionListenerConnectionError() throws SQLException {
 
   @Test
   public void testExecuteQueryWithConnectionPoolingEnabledDefaultPoolSize() throws SQLException {
-    String connectionURL =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";";
+    String connectionURL = ITBase.connectionUrl;
+
     assertConnectionPoolingResults(connectionURL, DEFAULT_CONN_POOL_SIZE);
   }
 
   @Test
   public void testExecuteQueryWithConnectionPoolingEnabledCustomPoolSize() throws SQLException {
     String connectionURL =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";"
-            + "ConnectionPoolSize="
-            + CUSTOM_CONN_POOL_SIZE
-            + ";";
+        ITBase.connectionUrl + "ConnectionPoolSize=" + CUSTOM_CONN_POOL_SIZE + ";";
     assertConnectionPoolingResults(connectionURL, CUSTOM_CONN_POOL_SIZE);
   }
 
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionTest.java
index d1a5b06ed6fb..40fd50e27488 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITConnectionTest.java
@@ -49,8 +49,7 @@ public class ITConnectionTest {
   static int randomNumber = random.nextInt(999);
   private static final String TABLE_NAME = "JDBC_CONNECTION_TEST_TABLE" + randomNumber;
 
-  private static String connectionUrl =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId=%s;OAuthType=3;Timeout=3600;";
+  private static String connectionUrl = ITBase.connectionUrl;
 
   @BeforeAll
   public static void beforeClass() throws InterruptedException {
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITDatabaseMetadataTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITDatabaseMetadataTest.java
index 8df46d7d5802..ab05738a41a6 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITDatabaseMetadataTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITDatabaseMetadataTest.java
@@ -49,10 +49,7 @@
 
 public class ITDatabaseMetadataTest extends ITBase {
   static final String PROJECT_ID = ServiceOptions.getDefaultProjectId();
-  static final String connection_uri =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-          + PROJECT_ID
-          + ";OAUTHTYPE=3";
+  static final String connection_uri = ITBase.connectionUrl;
   private static final Random random = new Random();
   private static final int randomNumber = random.nextInt(9999);
   private static String DATASET;
@@ -65,8 +62,7 @@ public class ITDatabaseMetadataTest extends ITBase {
       Pattern.compile("^(\\d+)\\.(\\d+)(?:\\.\\d+)+\\s*.*");
   private static final String DEFAULT_CATALOG = ServiceOptions.getDefaultProjectId();
   private static final String TABLE_NAME = "JDBC_DBMETADATA_TEST_TABLE" + randomNumber;
-  private static String connectionUrl =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId=%s;OAuthType=3;Timeout=3600;";
+  private static String connectionUrl = ITBase.connectionUrl;
 
   @BeforeAll
   public static void beforeClass() throws InterruptedException, SQLException {
@@ -1107,11 +1103,7 @@ public void testAdditionalProjectsInMetadata() throws SQLException {
     String datasetInAdditionalProject = "baseball";
 
     String urlWithAdditionalProjects =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId="
-            + PROJECT_ID
-            + ";OAuthType=3"
-            + ";AdditionalProjects="
-            + additionalProjectsValue;
+        ITBase.connectionUrl + "AdditionalProjects=" + additionalProjectsValue;
 
     try (Connection conn = DriverManager.getConnection(urlWithAdditionalProjects)) {
       DatabaseMetaData dbMetaData = conn.getMetaData();
@@ -1172,10 +1164,8 @@ public void testFilterTablesOnDefaultDataset_getTables() throws SQLException {
     String table2InSpecificDataset = "external_table";
 
     String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId="
-            + PROJECT_ID
-            + ";OAuthType=3"
-            + ";DefaultDataset="
+        ITDatabaseMetadataTest.connectionUrl
+            + "DefaultDataset="
             + defaultDatasetValue
             + ";FilterTablesOnDefaultDataset=1";
     try (Connection conn = DriverManager.getConnection(connectionUrl)) {
@@ -1243,10 +1233,8 @@ public void testFilterTablesOnDefaultDataset_getColumns() throws SQLException {
     String[] columnsInSpecificTable = {"id", "name", "created_at"};
 
     String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId="
-            + PROJECT_ID
-            + ";OAuthType=3"
-            + ";DefaultDataset="
+        ITDatabaseMetadataTest.connectionUrl
+            + "DefaultDataset="
             + defaultDatasetValue
             + ";FilterTablesOnDefaultDataset=1";
 
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITNightlyBigQueryTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITNightlyBigQueryTest.java
index 161f5163b691..ff9dbf0e7060 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITNightlyBigQueryTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITNightlyBigQueryTest.java
@@ -81,15 +81,9 @@ public class ITNightlyBigQueryTest {
   private static final String CALLABLE_STMT_DML_TABLE_NAME = "IT_CALLABLE_STMT_PROC_DML_TABLE";
   private static String DATASET;
   private static String DATASET2;
-  static final String session_enabled_connection_uri =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-          + PROJECT_ID
-          + ";OAUTHTYPE=3;EnableSession=1";
+  static final String session_enabled_connection_uri = ITBase.connectionUrl + "EnableSession=1;";
 
-  static final String connection_uri =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-          + PROJECT_ID
-          + ";OAUTHTYPE=3";
+  static final String connection_uri = ITBase.connectionUrl;
 
   @BeforeAll
   public static void beforeClass() throws SQLException {
@@ -343,11 +337,8 @@ public void testExecuteLargeUpdate() throws SQLException {
   public void testHTAPIWithValidDestinationTableSavesQueriesWithStandardSQL() throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=SQL;"
+        ITNightlyBigQueryTest.connection_uri
+            + "QueryDialect=SQL;"
             + "LargeResultTable=destination_table_test;"
             + "LargeResultDataset=INTEGRATION_TESTS;"
             + "EnableHighThroughputAPI=1;";
@@ -733,11 +724,8 @@ public void testFailedStatementInTheMiddleOfExecuteBatchStopsExecuting() throws
   public void testHTAPIWithValidDestinationTableSavesQueriesWithLegacy() throws SQLException {
     // setup
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryDialect=BIG_QUERY;"
+        ITNightlyBigQueryTest.connection_uri
+            + "QueryDialect=BIG_QUERY;"
             + "LargeResultTable=destination_table_test;"
             + "LargeResultDataset=INTEGRATION_TESTS;"
             + "EnableHighThroughputAPI=1;";
@@ -1121,10 +1109,8 @@ public void testValidAllDataTypesSerializationFromSelectQueryArrowDataset() thro
     String TABLE_NAME = "JDBC_INTEGRATION_ARROW_TEST_TABLE";
     String selectQuery = "select * from " + DATASET + "." + TABLE_NAME + " LIMIT 5000;";
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;ProjectId="
-            + PROJECT_ID
-            + ";EnableHighThroughputAPI=1;"
+        ITNightlyBigQueryTest.connection_uri
+            + "EnableHighThroughputAPI=1;"
             + "HighThroughputActivationRatio=2;"
             + "HighThroughputMinTableSize=1000;";
 
@@ -1183,10 +1169,10 @@ public void testBulkInsertOperation() throws SQLException {
     String selectQuery = String.format("SELECT * FROM %s.%s", DATASET, TABLE_NAME);
 
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;"
-            + "EnableWriteAPI=1;SWA_ActivationRowCount=5;SWA_AppendRowCount=500";
+        ITNightlyBigQueryTest.connection_uri
+            + "EnableWriteAPI=1;"
+            + "SWA_ActivationRowCount=5;"
+            + "SWA_AppendRowCount=500";
 
     try (Connection connection = DriverManager.getConnection(connection_uri)) {
       bigQueryStatement.execute(createQuery);
@@ -1232,10 +1218,10 @@ public void testBulkInsertOperationStandard() throws SQLException {
     String selectQuery = String.format("SELECT * FROM %s.%s", DATASET, TABLE_NAME);
 
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;"
-            + "EnableWriteAPI=0;SWA_ActivationRowCount=50;SWA_AppendRowCount=500";
+        ITNightlyBigQueryTest.connection_uri
+            + "EnableWriteAPI=0;"
+            + "SWA_ActivationRowCount=50;"
+            + "SWA_AppendRowCount=500";
 
     try (Connection connection = DriverManager.getConnection(connection_uri)) {
       bigQueryStatement.execute(createQuery);
@@ -1365,13 +1351,7 @@ public void testQueryPropertySessionIdIsUsedWithTransaction()
 
     // Run the transaction
     String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";QueryProperties=session_id="
-            + sessionId
-            + ";";
+        ITNightlyBigQueryTest.connection_uri + "QueryProperties=session_id=" + sessionId + ";";
     Driver driver = BigQueryDriver.getRegisteredDriver();
     Connection connection = driver.connect(connection_uri, new Properties());
     Statement statement = connection.createStatement();
@@ -1613,12 +1593,7 @@ public void testIterateOrderArrowMultiThread() throws SQLException {
   @Test
   public void testNonEnabledUseLegacySQLThrowsSyntaxError() throws SQLException {
     // setup
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
-            + "OAuthType=3;"
-            + "ProjectId="
-            + PROJECT_ID
-            + ";";
+    String connection_uri = ITNightlyBigQueryTest.connection_uri;
     String selectLegacyQuery =
         "SELECT * FROM [bigquery-public-data.deepmind_alphafold.metadata] LIMIT 20000000;";
     Driver driver = BigQueryDriver.getRegisteredDriver();
@@ -1661,10 +1636,12 @@ public void testReadAPIPathLarge() throws SQLException {
   @Test
   public void testReadAPIPathLargeWithThresholdParameters() throws SQLException {
     String connectionUri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;MaxResults=300;HighThroughputActivationRatio=2;"
-            + "HighThroughputMinTableSize=100;EnableHighThroughputAPI=1";
+        ITNightlyBigQueryTest.connection_uri
+            + "MaxResults=300;"
+            + "HighThroughputActivationRatio=2;"
+            + "HighThroughputMinTableSize=100;"
+            + "EnableHighThroughputAPI=1";
+
     Connection connection = DriverManager.getConnection(connectionUri);
     Statement statement = connection.createStatement();
     int expectedCnt = 1000;
@@ -1679,10 +1656,11 @@ public void testReadAPIPathLargeWithThresholdParameters() throws SQLException {
   @Test
   public void testReadAPIPathLargeWithThresholdNotMet() throws SQLException {
     String connectionUri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + PROJECT_ID
-            + ";OAUTHTYPE=3;HighThroughputActivationRatio=4;"
-            + "HighThroughputMinTableSize=100;EnableHighThroughputAPI=1";
+        ITNightlyBigQueryTest.connection_uri
+            + "HighThroughputActivationRatio=4;"
+            + "HighThroughputMinTableSize=100;"
+            + "EnableHighThroughputAPI=1";
+
     Connection connection = DriverManager.getConnection(connectionUri);
     Statement statement = connection.createStatement();
     int expectedCnt = 5000;
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITResultSetMetadataTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITResultSetMetadataTest.java
index 917db7124243..65a3b888d4fd 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITResultSetMetadataTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITResultSetMetadataTest.java
@@ -55,8 +55,7 @@ public static void afterClass() throws InterruptedException {
   @Test
   public void testResultSetMetadata() throws SQLException {
     String selectData = "SELECT * FROM " + DATASET + "." + TABLE_NAME + ";";
-    Connection connection =
-        DriverManager.getConnection(String.format(ITBase.connectionUrl, DEFAULT_CATALOG));
+    Connection connection = DriverManager.getConnection(ITBase.connectionUrl);
     Statement statement = connection.createStatement();
     ResultSet resultSet = statement.executeQuery(selectData);
     metaData = resultSet.getMetaData();
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITStatementTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITStatementTest.java
index bc3a995d837a..0e097a6095fa 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITStatementTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/it/ITStatementTest.java
@@ -43,8 +43,7 @@
 public class ITStatementTest {
   private static final String DEFAULT_CATALOG = ServiceOptions.getDefaultProjectId();
   private static String DATASET;
-  private static String connectionUrl =
-      "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId=%s;OAuthType=3;Timeout=3600;";
+  private static String connectionUrl = ITBase.connectionUrl;
   private static Random random = new Random();
   private static int randomNumber = random.nextInt(999);
   private static final String TABLE_NAME = "JDBC_STATEMENT_TEST_TABLE" + randomNumber;
@@ -222,10 +221,7 @@ public void testExecuteUpdate() throws SQLException {
 
   @Test
   public void testScript() throws SQLException {
-    String connection_uri =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;PROJECTID="
-            + DEFAULT_CATALOG
-            + ";OAUTHTYPE=3";
+    String connection_uri = ITStatementTest.connectionUrl;
     Properties withReadApi = new Properties();
     withReadApi.setProperty("EnableHighThroughputAPI", "1");
     Connection connection = DriverManager.getConnection(connection_uri, withReadApi);
@@ -254,19 +250,9 @@ private int resultSetRowCount(ResultSet resultSet) throws SQLException {
 
   @Test
   public void testStringColumnLength() throws SQLException {
-    String projectId = DEFAULT_CATALOG;
     String TABLE_NAME = "StringColumnLengthTable";
-    String oauthType = "3"; // Google Application Credentials
     int length = 10;
-    String connectionUrl =
-        "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;ProjectId="
-            + projectId
-            + ";OAuthType="
-            + oauthType
-            + ";Timeout=3600;"
-            + "StringColumnLength="
-            + length
-            + ";";
+    String connectionUrl = ITStatementTest.connectionUrl + "StringColumnLength=" + length + ";";
     // + "EnableSession=1";
     Connection connection1 = DriverManager.getConnection(connectionUrl);
     Statement statement = connection1.createStatement();
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/utils/TestUtilities.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/utils/TestUtilities.java
index 419cb9b0bcb1..e395c124a8f7 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/utils/TestUtilities.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/utils/TestUtilities.java
@@ -140,4 +140,30 @@ public int getConnectionErrorCount() {
       return connectionErrorCount;
     }
   }
+
+  private static String getEnvOrProperty(String envVar, String sysProp, String defaultValue) {
+    String value = System.getenv(envVar);
+    if (value == null || value.isEmpty()) {
+      value = System.getProperty(sysProp, defaultValue);
+    }
+    return value;
+  }
+
+  public static String getBaseUrl() {
+    return getEnvOrProperty(
+        "BIGQUERY_BASE_URL", "bigquery.baseUrl", "https://www.googleapis.com/bigquery/v2:443");
+  }
+
+  public static String getUrlFlags() {
+    return getEnvOrProperty("BIGQUERY_URL_FLAGS", "bigquery.urlFlags", "");
+  }
+
+  public static String getBaseConnectionUrl() {
+    String baseUrl = getBaseUrl();
+    String flags = getUrlFlags();
+    if (!flags.isEmpty() && !flags.endsWith(";")) {
+      flags += ";";
+    }
+    return "jdbc:bigquery://" + baseUrl + ";" + flags;
+  }
 }