Interstate 375 Florida

Overview

Interstate 375 (North Bay Drive) is the northern freeway spur connecting I-275 with Downtown St. Petersburg. One-tenth of a mile shorter than its southern counterpart (I-175), I-375 is the shortest designated Interstate within Florida. 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).

History

Interstate 375 was built between 1977 and 1979 in two phases. The first completed section opened to traffic on January 17, 1978. The remaining portion of the collector freeway was completed in January 1979.1 The I-375 designation was formally added to the Interstate system in November 1982.2 A ramp stub at the west end alludes to a previously proposed connection with 20th Street N.

Route Information

  • East End – St. Petersburg, FL

  • West End – St. Petersburg, FL

  • Mileage – 1.34
  • Cities – St. Petersburg
  • Junctions

Source: December 31, 2018 Interstate Route Log and Finders List

I-375 Annual Average Daily Traffic (AADT)

Vehicles per day Location
36,500 Between I-275 & MLK, Jr. St N
25,500 Between MLK, Jr. St N. & 8th St N
10,300 Between 8th St N & 5th St N

Source: 2018 AADT – Florida Traffic Online (FDOT)

Highway Guides

West End – St. Petersburg, Florida

West at I-275

I-375 west at I-275 - St. Petersburg, FL

Interstate 375 west rises over 16th Street N just ahead of the ramp split for Interstate 275. South Bay Drive defaults onto I-275 north toward St. Pete-Clearwater International Airport (PIE) and the city of Tampa while a left side ramp connects with I-275 south. Photo taken 07/10/11.

I-375 west at I-275 - St. Petersburg, FL

A roadway stub appears along the ramp from Interstate 375 west to I-275 south for the unconstructed exit to 20th Street N. Photo taken 01/16/14.

I-275 South at

I-275 south at I-375 - St. Petersburg, FL

Crossing 22nd Avenue N, I-275 continues one mile south to Interstate 375 (Exit 23A), the first of two freeways spurring east into Downtown St. Petersburg. Photo taken 05/28/14.

I-275 south at I-375 - St. Petersburg, FL

Interstate 375 east leaves I-275 south for the Uptown neighborhood near Downtown St. Petersburg. The freeway is also signed as the most direct route to both Sundial (shopping district) and The Pier, the city’s municipal marina. Photo taken 05/28/14.

I-275 south at I-375 - St. Petersburg, FL

Two lanes depart from the left side of Interstate 275 south for I-375 (South Bay Drive) east to Martin Luther King, Jr. Street N and Florida 595 (4th Avenue N) ahead of 5th Street N. I-275 south next meets Interstate 175 (South Bay Drive) east. Photo taken 05/28/14.

I-275 North at

I-275 north at I-375 - St. Petersburg, FL

Leaving the three way interchange (Exit 22) with Interstate 175 east to Tropicana Field, I-275 quickly approaches Interstate 375 east to The Pier. The freeway follows North Bay Drive to  U.S. 19 Alternate (4th Avenue N) north of Downtown. Photo taken 07/06/13.

I-275 north at I-375 - St. Petersburg, FL

Traffic from I-175 adds an auxiliary lane for I-375 east (Exit 23) and a third northbound lane for Interstate 275 north toward Pinellas Park and Tampa. Photo taken 10/08/16.

West End Throwback

I-375 west at I-275 - 2006
I-375 west at I-275 - 2006

Guide signs for I-275 at the west end of Interstate 375 were replaced by May 2009. Photos taken 07/30/06.

East End US 19 Alternate Florida 595 / 4th Avenue N – St. Petersburg, Florida

East at US 19 Alternate Florida 595

I-375 east at US 19 Alt - St. Petersburg, FL

Interstate 375 (North Bay Drive) navigates through an S-curve above Martin Luther King Jr. and 8th Streets N just ahead of the merge with SR 595 (4th Avenue N). Photo taken 08/24/13.

I-375 east at US 19 Alt - St. Petersburg, FL

A pair of end shields precede the transition of I-375 (North Bay Drive) onto SR 595 (4th Avenue N) near Mirror Lake and the St Petersburg Shuffleboard Club. Photo taken 08/24/13.

US 19 Alternate Florida 595 North at

US 19 Alt north at I-375 - St. Petersburg, FL

U.S. 19 Alternate & SR 595 (5th Avenue N) stem west from U.S. 92 and SR 687 (4th Street N) four blocks to the westbound beginning of Interstate 375 (North Bay Drive). Photo taken 07/10/11.

US 19 Alt north at I-375 - St. Petersburg, FL

Two lanes separate from 5th Avenue North westbound for Interstate 375. Succeeding ramps connect with I-375 just ahead of the directional T interchange with Interstate 275 north to Tampa and south to the Sunshine Skyway. Photo taken 07/10/11.

East End Throwback

I-375 east at 9th/8th St N - St. Petersburg, FL
I-375 east at 9th/8th St N - St. Petersburg, FL

Replaced guide signs for the Dr. Martin Luther King, Jr. St/8th St N ramp and I-375 connection to 4th Street S. 9th Street was renamed to honor M.L. King, Jr. in 1988. Photos taken 07/30/06.

Sources:

  1. Florida’s Interstates: A Half-Century of Progress. Florida Department of Transportation, web site.
  2. American Association of State Highway and Transportation Officials (AASHTO) Route Numbering Committee Meeting, November 19, 1982 (document).

Page updated May 21, 2019.