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Interstate 175 Florida

 

Routing

Interstate 175 (South Bay Drive) constitutes a very short spur, only slightly longer than its partner to the north, Interstate 375. This freeway connects Interstate 275 with Tropicana Field and downtown St. Petersburg. The route doubles as Florida 594, which extends one block east of the freeway end to Florida 687 (3rd Street South) north.

History

Interstate 175 fully opened to traffic on July 23, 1980 at a cost of $5.5-million. Work began in 1977 on the final link, between 9th Street South and 4th Street South.1

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).
Shortly thereafter, Interstate 275 south approaches the junction with Interstate 175 (South Bay Drive). This is shown with another diagrammatical sign, as the left two lanes transition onto Interstate 175, and the right two lanes continue south on Interstate 275 toward the Sunshine Skyway. The control point of Interstate 175 is Tropicana Field, home to the Major League Baseball franchise the Tampa Bay Devil Rays. Photo taken by Alex Nitzman (05/27/05).
A second diagrammatical sign is posted immediately thereafter on southbound Interstate 275. Photo taken by Alex Nitzman (05/27/05).
This mileage sign along southbound Interstate 275 provides the distance to Exit 22, Junction Interstate 175/South Bay Drive east; Exit 21, 28th Street South; and Exit 20, 22nd Avenue South. Photo taken by Alex Nitzman (05/27/05).
Interstate 175 (South Bay Drive) east and Interstate 275 south split here. The majority of traffic appears to be continuing south on Interstate 275 rather than exiting onto Interstate 175. Use Interstate 175 east to Tropicana Field. Photo taken by Alex Nitzman (05/27/05).
Once on the transition ramp from southbound Interstate 275 to eastbound Interstate 175 (South Bay Drive), this mileage sign provides the distance to all of the exits on Interstate 175: 9th Street South, 8th Street South, and 6th Street South. This is an original sign. Photo taken by Alex Nitzman (05/27/05).
Perspective from Interstate 175 east
The first exit from eastbound Interstate 175 connects to 8th Street, Martin Luther King, Jr. Street, and 9th Street South to Tropicana Field. This ramp has two lanes (connecting southbound Interstate 275 with eastbound Interstate 175); prior to the first exit, these lanes will unite with incoming traffic from northbound Interstate 275. Photo taken by Alex Nitzman and Carter Buchanan (12/30/05).
After the two transition ramps merge, eastbound Interstate 175 carries four through lanes briefly. However, the two lanes from the northbound Interstate 275 transition immediately prepare to exit only at the 9th Street offramp. Note that there are no exit numbers on Interstate 175, since it is such a short road. Photo taken by Alex Nitzman and Carter Buchanan (12/30/05).
Perspective from Interstate 175 west
After passing to the south of downtown St. Petersburg, westbound Interstate 175 prepares to partition into Interstate 275 north to Tampa (right two lanes) and south to Bradenton (left two lanes). Use Interstate 275 north to the western terminus of Interstate 375 in one mile at Exit 23. Photo taken by Alex Nitzman (05/27/05).
The left two lanes of westbound Interstate 175 connect to southbound Interstate 275, while the right two lanes connect to northbound Interstate 275. Interstate 275 north crosses Old Tampa Bay in nine miles and enters Tampa in 15 miles. This marks the end of Interstate 175 west; there is no END shield. Photo taken by Alex Nitzman (05/27/05).
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).
Eastern Terminus - Florida 595 - St. Petersburg, Florida
Perspective from Interstate 175 east
Eastbound Interstate 175 splits, with the right two lanes exiting to 9th Street South, 8th Street South, and Martin Luther King, Jr. Street (this could be Exit 1 if the exits were numbered). The left two lanes continue along eastbound Interstate 175 to the penultimate exit (6th Street South, which could be Exit 2) and the final exit, a connection ramp to 4th Street South (which could be Exit 3). Photo taken by Alex Nitzman and Carter Buchanan (12/30/05).
The last mainline exit of Interstate 175 eastbound is for 6th Street South. End signage is posted for Interstate 175 in a countdown fashion, similar to that of Interstate 75, 95, and 375. Interestingly, Exit 3 is marked as being one-half mile away, meaning that the Interstate ends a couple hundred feet before Exit 3. Photo taken by Alex Nitzman (05/27/05).
This roadside sign advises that Interstate 175 ends in 1,000 feet. Photo taken by Alex Nitzman and Carter Buchanan (12/30/05).
Merge from Interstate 175 toward "Exit 3" and 4th Street South. The freeway ends here, and the eastbound lanes merge directly onto eastbound 5th Avenue South (a one-way street like most streets in the downtown St. Petersburg street grid system). Follow the signs to the Salvador Dali Museum. Photo taken by Alex Nitzman (05/27/05).
"Exit 3" for Junction Southbound Florida 687/4th Street South is actually a stoplight. Note the button copy overhead signs strung by a wire. Proceed one more block to connect to northbound Florida 687/3rd Street South. Photo taken by Alex Nitzman and Carter Buchanan (12/30/05).
A few feet further east, this photo shows the eastern end of Interstate 175 at the stoplight with southbound Florida 687/4th Street South. Continue straight ahead on eastbound 5th Avenue South to Junction Florida 687 north (via 3rd Street South), the waterfront, and museums. Photo taken by Alex Nitzman (05/27/05).
One block further east, eastbound 5th Avenue South intersects with 4th Street South. Turn north on 3rd Street South to downtown St. Petersburg and northbound Florida 687 to U.S. 92. Contrary to certain maps, U.S. 92 does not extend this far south; instead, U.S. 92 ends at the intersection of Florida 687 (4th Street North) with Florida 595 (5th Avenue North). That intersection is ten blocks north of here. Photo taken by Alex Nitzman (05/27/05).
Perspective from Northbound Florida 687 (3rd Street South)
Northbound Florida 687/3rd Street South approaches the intersection with 4th Avenue South. To connect to Interstate 175 west, turn left here, follow westbound 4th Avenue South for one block, turn south on 4th Street South, and turn west on Interstate 175/South Bay Drive. Continue straight ahead on eastbound 5th Avenue South to the waterfront and museums. Photo taken by Alex Nitzman (07/30/06).
Perspective from Southbound Florida 687 (4th Street South)
Now traveling south on Florida 687 (4th Street South), this guide sign advises of the freeway ramp that connects to Interstate 175 (but no Interstate shield is used on the sign). The control cities for Interstate 275 (north - Tampa, south - Bradenton) are used for Interstate 175 west. The house to the right of the mileage sign was torn down since 2005 to make way for "The Sage" condominiums, a new high rise. Photo taken by Alex Nitzman (05/27/05).
Southbound Florida 687 (4th Street South) reaches the connecting ramp to westbound Interstate 175 to Interstate 275. Note that this sign actually uses the official name of Interstate 175, which is "South Bay Drive." Photo taken by Alex Nitzman (07/30/06).
Perspective from Interstate 175 west
Interstate 175 begins as a two-lane freeway after departing from Florida 687 (4th Street South). There are no exits on westbound Interstate 175 until the junction with Interstate 275. Photo taken by Alex Nitzman (05/27/05).
Upon reaching the first (and only) westbound Interstate 175 reassurance shield, the entire concrete freeway comes into view. The junction with Interstate 275, along with Tropicana Field, can be seen in the distance. Photo taken by Alex Nitzman (05/27/05).
Much of Interstate 175 is a below-grade freeway (as opposed to viaduct). It is less than a mile from here to the junction with Interstate 275. Photo taken by Alex Nitzman (05/27/05).

Sources:

  1. "I-275 south feeder is open downtown." St. Petersburg Times, July 24, 1980.

Page Updated May 16, 2013.

 
Mileage

State Florida
Mileage 1.44
Cities St. Petersburg
Junctions Interstate 275
Source: October 31, 2002 Interstate Route Log and Finders List
I-175 Florida Annual Average Daily Traffic

County From Exit To Exit AADT Composite
Pinellas Interstate 275 Exit 1A/9th Street South 35,000
Pinellas Exit 1A/9th Street South Exit 1B/6th Street South 23,200
Pinellas Exit 1B/6th Street South Exit 1C/4th Street South 12,100
Source: Florida Traffic Information 2002 CD-Rom

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