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

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.

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 $16.5 million in 2022[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, TampaWestern 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. 1 2 3 "Straight Line Diagram of Road Inventory". Florida Department of Transportation. February 25, 2020. Retrieved August 4, 2021.
  2. 1 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 November 30, 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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