Interstate 175

Interstate 175 (I-175) in St. Petersburg, Florida, also known as South Bay Drive, is a 1.3-mile-long (2.1 km) spur route from I-275 into downtown St. Petersburg. It is also designated as the unsigned highway State Road 594 (SR 594).[2] There is a sibling segment of freeway nearby designated as I-375.

This article is about the current highway in Florida. For proposed meanings, see Interstate 175 (disambiguation).

Interstate 175 marker

Interstate 175

South Bay Drive
I-175 highlighted in red
Route information
Auxiliary route of I-75
Maintained by FDOT
Length1.372 mi[1] (2.208 km)
Existed1980–present
NHSEntire route
Major junctions
West end I-275 in St. Petersburg
East end SR 594 / SR 687 in St. Petersburg
Location
CountryUnited States
StateFlorida
CountiesPinellas
Highway system
← SR 173→ SR 187
← SR 592SR 594→ I-595

Route description

The Interstate begins at I-275 with Tropicana Field on the northeast side of the interchange, going east into downtown St. Petersburg, passing through eastbound exits with 9th Street South/8th Street South and 6th Street South before the Interstate ends at 5th Avenue South next to an at-grade intersection with 4th Street South. Westbound, the Interstate begins with a split from southbound 4th Street South just north of the 4th Street South/5th Avenue South intersection and has no exits until the interchange with I-275. Along with its sister highway, I-375, I-175 lacks exit numbers.[1]

History

The freeway was originally to have been a part of the former Pinellas Belt Expressway, which would have continued from its western terminus at I-275. The Pinellas Belt Expressway was budgeted in 1974 but was canceled in the late 1970s due to local opposition.[3] I-175 was built between 1977 and 1980 and opened on April 23, 1980, at a cost of $5.5 million (equivalent to $15.4 million in 2021[4]).[5]

When I-75 was relocated in the late 1970s–early 1980s, five miles (8.0 km) of additional Interstate became available; thus, the St. Petersburg feeder sections of I-175 and neighboring I-375 were upgraded to Interstate status.

Exit list

The entire route is in St. Petersburg, Pinellas County. All exits are unnumbered.

mi[2]kmDestinationsNotes
0.0000.000 I-275 (SR 93) – Bradenton, TampaWestbound exit and eastbound entrance; western terminus, I-275 exit 22; tri-stack interchange.
0.7851.263 M.L. King Jr. Street South / 8th Street SouthEastbound exit and westbound entrance; access to Bayfront Health St. Petersburg
1.0891.7536th Street SouthEastbound exit and westbound entrance
1.2852.0684th Street SouthEast end of I-175; SR 594 continues one block (eastbound only)
1.372[1]2.208
 SR 687 north (3rd Street South) – Downtown St. Petersburg
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References
  1. "Straight Line Diagram of Road Inventory". Florida Department of Transportation. February 25, 2020. Retrieved August 4, 2021.
  2. "Florida Department of Transportation Interchange Report" (PDF). Florida Department of Transportation. September 29, 2017. p. 7. Retrieved January 22, 2019.
  3. "Pinellas County". AARoads. Retrieved August 4, 2021.
  4. Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved January 1, 2023. United States Gross Domestic Product deflator figures follow the Measuring Worth series.
  5. "I-175 at South-East highways". Retrieved October 5, 2014.
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