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Interstate 375 Florida

 

Routing

Interstate 375 is one of two short freeway spurs connecting Interstate 275 with downtown St. Petersburg. Slightly shorter that its sibling, Interstate 175, Interstate 375 takes traffic to The Pier and other downtown bay front attractions.

History

Interstate 375 (South Bay Drive) was completed and opened to traffic in 1979.1 The ghost ramp at the western end of Interstate 375 was not supposed to connect to a toll expressway to Clearwater. That expressway would have alleviated traffic congestion on U.S. 19 and started from the Exit 31 partial "Y" interchange with Interstate 275 to the south. The ghost ramp at the west end was instead to connect with adjacent 20th Street North.

Highway Guides

Western Terminus - Interstate 275 - St. Petersburg, Florida
Perspective from Interstate 275 south
This mileage sign on southbound Interstate 275 is located prior to the offramp to Exit 24, 22nd Avenue North. It provides the distance to Exit 23B, Junction Florida 595, Fifth Avenue North; Exit 23A, Junction Interstate 375/North Bay Drive; and Exit 22, Junction Interstate 175/South Bay Drive. Photo taken by Alex Nitzman and Carter Buchanan (12/30/05).
Southbound Interstate 275 reaches Exit 24, 22nd Avenue North. The next three exits along southbound Interstate 275 serve downtown St. Petersburg, including the two spur routes. Photo taken by Alex Nitzman and Carter Buchanan (12/30/05).
This is the first of two diagrammatical signs that show the split between Interstate 275 south and Interstate 375 east in downtown St. Petersburg. A similar set of signs is posted for Exit 22, Junction Interstate 175. Photo taken by Alex Nitzman (05/27/05).
Use either Exit 23B, Junction Florida 595, Fifth Avenue North or Exit 22, Junction Interstate 175/South Bay Drive to the Tampa Bay Devil Rays Tropicana Field. Photo taken by Alex Nitzman (05/27/05).
The next exit on southbound Interstate 275 is Exit 23B, Junction Florida 595 (5th Avenue North) followed by Exit 23A, Junction Interstate 375 east. Photo taken by Alex Nitzman (05/27/05).
Interstate 375 east serves most waterfront destinations, downtown, and the waterfront. Check out the use of three colors (brown, green, and blue) all in one sign! Photo taken by Alex Nitzman (05/27/05).
The second diagrammatical sign related to Interstate 375 is posted on Interstate 275 south as the freeway draws near Exit 23A, Junction Interstate 375/North Bay Drive east. Signs for the short spur now include Baywalk in addition to The Pier as a control destination. Photo taken by Alex Nitzman (05/27/05).
Southbound Interstate 275 reaches Exit 23B, Junction Florida 595/Fifth Avenue North. Use Florida 595 or Interstate 375 east to U.S. 92, which originates just north of downtown St. Petersburg. It is not clear why U.S. 92 ends where it does; it seems like it could be extended west to connect to Interstate 275, U.S. 19, Alternate U.S. 19, or Florida 699 near the beach. Photo taken by Alex Nitzman (05/27/05).
Interstate 275 southbound reaches Exit 23A (old Exit 10), Junction Interstate 375 east to downtown St. Petersburg. The next southbound interchange is for the western terminus of Interstate 175. Photo taken by Alex Nitzman (05/27/05).
Perspective from Interstate 375 east
The Interstate 275 southbound ramp to Interstate 375 eastbound. A three-level directional interchange joins the two freeways above the Florida 595 (5th Avenue North) intersection with 20th Street North. The downtown skyline of St. Petersburg can be seen to the southwest. Photo taken by Andy Field/Gene Janczynskyi (12/00).
The transition ramp from northbound Interstate 275 to eastbound Interstate 375 prepares to merge with the ramp from southbound Interstate 275 to eastbound Interstate 375. Photo taken by Alex Nitzman (05/27/05).
Interstate 375 has no reassurance markers on eastbound since the route is so short. The two exits connect to 9th Street North/8th Street North and Florida 687 (4th Street North) to U.S. 92. Photo taken by Alex Nitzman (05/27/05).
Use the first exit to Martin Luther King, Jr. Street and 9th Street North as well as Tropicana Field. Photo taken by Alex Nitzman (05/27/05).
Perspective from Interstate 375 west
Interstate 375 westbound approaches Interstate 275 and the terminus. Traffic is defaulted onto Interstate 275 north toward Saint Petersburg-Clearwater International Airport and the city of Tampa. Photo taken by Alex Nitzman (05/27/05).
Split of Interstate 375 westbound traffic into north and southbound Interstate 275 ramps. Photo taken by Alex Nitzman (05/27/05).
This view shows the westbound Interstate 375 transition onto southbound Interstate 275 (left lanes) and northbound Interstate 275 (right lanes). Photo taken by Alex Nitzman (05/27/05).
A ghost ramp can be seen on the connection from westbound Interstate 375 to southbound Interstate 275. This would be the planned connector to an often-proposed but never-built toll road that would have traveled all the way to Clearwater. Photo taken by Gene Janczynskyi (10/25/00).
Perspective from Interstate 275 north
After leaving the Sunshine Skyway bridge over Tampa Bay, Interstate 275 north arrives in St. Petersburg. The interchanges with Interstate 175 and Interstate 375 occur after Exit 20, 31st Street South. Photo taken by Alex Nitzman and Justin Cozart (03/26/06).
This is the one-mile advance signage for Exit 22, Junction Interstate 175. Interstate 175 travels west to the southern end of downtown St. Petersburg. The short spur is among the shortest extant freeways in the Interstate Highway System, and its sibling Interstate 375 to the north is even shorter! Photo taken by Alex Nitzman and Justin Cozart (03/26/06).
This mileage sign on northbound Interstate 275 provides the distance to Exit 22 (Junction Interstate 175 east) and Exit 23 (Junction Interstate 375 east to U.S. 92), which serve downtown St. Petersburg. Photo taken by Alex Nitzman and Justin Cozart (03/26/06).
Use Interstate 175 east to the Bayfront Center and the University of South Florida - St. Petersburg campus. Photo taken by Alex Nitzman and Justin Cozart (03/26/06).
The right lane of northbound Interstate 275 becomes exit only as the freeway approaches Exit 22, Junction Interstate 175 east to downtown St. Petersburg. Photo taken by Alex Nitzman and Justin Cozart (03/26/06).
Northbound Interstate 275 reaches Exit 22, Junction Interstate 175 east to downtown St. Petersburg. The next exit is Exit 23, Junction Interstate 375 east to downtown St. Petersburg and the Pier. Note Tropicana Field (which is also listed as a destination on the overhead sign) in the background. Photo taken by Alex Nitzman and Justin Cozart (03/26/06).
Continuing north, Interstate 275 next approaches the interchange with Interstate 375. Notably, Interstate 275 has only two through lanes as it passes over the Interstate 175 interchange. Photo taken by Justin Cozart (12/02).
The next three exits along northbound Interstate 275 are Exit 23, Junction Interstate 375 east to U.S. 92; Exit 24, 22nd Avenue North; and Exit 25, 38th Avenue North. Photo taken by Justin Cozart (12/02).
Northbound Interstate 275 reaches Exit 23, Junction Interstate 375. Although not signed, use Interstate 375 east to U.S. 92. Trans-peninsular U.S. 92 begins at Florida 687 and Florida 595 just north of the eastern terminus of Interstate 395. Interstate 375 is a shorter route than Interstate 175, but it is still not the shortest Interstate highway. That honor goes to Interstate 878 New York (unsigned category) and Interstate 375 in Michigan (signed route category). Photo taken by Justin Cozart (12/02).
Eastern Terminus - Florida 595 - St. Petersburg, Florida
Perspective from Interstate 375 east
The first exit on eastbound Interstate 375 is also the penultimate (second to last) exit. Here, eastbound Interstate 375 reaches Exit 1, Junction Florida 689, which is a one-way couplet: 8th Street North and Martin Luther King, Jr. Street (9th Street North). Photo taken by Alex Nitzman (05/27/05).
Immediately after Exit 1, Junction Florida 689 (8th Street North and Dr. Martin Luther King, Jr. Street/9th Street North), this sign advises that Interstate 375 will end in 2,000 feet. Photo taken by Alex Nitzman (05/27/05).
The final section of Interstate 375 is elevated, unlike its twin Interstate 175 to the south. Photo taken by Alex Nitzman (05/27/05).
The speed limit will reduce from freeway speeds on Interstate 375 to 30 miles per hour on city streets. Photo taken by Alex Nitzman (05/27/05).
A pair of Interstate 375 end shields straddle the freeway as the elevated section ends and the freeway prepares to merge onto the city street grid system. Photo taken by Alex Nitzman (05/27/05).
Interstate 375 draws to a close, and the eastbound lanes merge onto eastbound Florida 595/4th Avenue North. The Salvador Dali museum is one of several local attractions including the Saint Petersburg Museum of History and the Bayfront Center Arena. Photo taken by Alex Nitzman (05/27/05).
Approximately two blocks further east is this traffic signal at the intersection with southbound Florida 687/4th Street South. Continue one more block east on Florida 595/4th Avenue North to meet northbound Florida 687/3rd Street North. Use Florida 687 north to U.S. 92 east to the Gandy Bridge. Photo taken by Alex Nitzman (07/30/06).
Perspective from Florida 595 (5th Avenue North) westbound
Now traveling west on Florida 595 (5th Avenue North), the left lane prepares to transition directly onto Interstate 375 westbound. Note the Junction Interstate 375 shield on the left side of the roadway. Photo taken by Alex Nitzman (05/27/05).
Westbound Florida 595 and westbound Interstate 375 split here. The left two lanes have access to westbound. This transition is near 7th Street North; as such, Interstate 375 is a few blocks shorter than Interstate 175, its sibling to the south. Photo taken by Alex Nitzman (07/30/06).
Perspective from Interstate 375 west
This is the first reassurance shield on westbound Interstate 375, after the split from Florida 595. Photo taken by Alex Nitzman (05/27/05).
The initial section of Interstate 375 is elevated as it crosses over the ramp that connects northbound Florida 689 (8th Street North) with westbound Interstate 375. Photo taken by Alex Nitzman (05/27/05).
The freeway gains an additional lane as feeder ramps merge onto the short freeway. The Interstate 275 junction signs are visible in the distance. Photo taken by Alex Nitzman (05/27/05).

Sources:

  1. Florida's Interstates: A Half-Century of Progress (official Florida Department of Transportation site)

Page Updated July 30, 2006.

 
Mileage

State Florida
Mileage 1.34
Cities St. Petersburg
Junctions Interstate 275
Source: October 31, 2002 Interstate Route Log and Finders List
I-375 Florida Annual Average Daily Traffic

County From To AADT Composite
Pinellas Interstate 75 Exit 1A/9th St. N/8th St. N 24,000
Pinellas Exit 1A/9th St. N/8th St. N Exit 1B/4th St. N 20,200
Pinellas Exit 1B/4th St. N Freeway End/5th Ave. South 14,400
Source: Florida Traffic Information 2002 CD-Rom

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