It is also designated as the unsigned State Road 594 .
Interstate 175 ( I - 175 ) in St. Petersburg , Florida , also known as South Bay Drive , is a 1.3 - mile - long spur route from Interstate 275 into downtown .
It is also designated as the unsigned South Bay Drive     .
Interstate 175 ( I - 175 ) in St. Petersburg , Florida , also known as South Bay Drive , is a 1.3 - mile - long spur route from Interstate 275 into downtown .