Interstate 375 (North Bay Drive) is the northern freeway spur connecting I-275 with U.S. 92 and SR 687 (4th Street N) outside Downtown St. Petersburg. I-375 is one-tenth of a mile shorter than its southern counterpart, Interstate 175 (South Bay Drive). State Road 592 runs along the entire length of North Bay Drive, which extends east to U.S. 19 Alternate and SR 595 (4th Avenue N).
Interstate 375 was built between 1977 and 1979 in two phases. The first section opened to traffic on January 17, 1978.1 The remaining portion of the collector freeway was completed in September 1979.2 The I-375 designation was formally added to the Interstate system in November 1982.3 A ramp stub at the west end alludes to a previously proposed connection with 20th Street N.