Interstate 275

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36th Avenue at I-275 - Manatee County, FL

The south end of Interstate 275 at I-75 in Manatee County as seen from the 36th Avenue E (Ellenton-Gillette Road) overpass. 02/12/15

Interstate 275 is the primary urban freeway serving the Tampa-St. Petersburg metropolitan area, spanning a distance of 60.6 miles from I-75 in north Manatee County through St. Petersburg and Tampa via the Sunshine Skyway and Howard Frankland bridges. The northern apex with I-75 lies at the Hillsborough / Pasco County line between Lutz and Wesley Chapel.

Interstate 275 Florida Guides

Portions of Interstate 275 through Tampa and St. Petersburg were originally constructed and opened with the I-4 and I-75 designations:

  • 1960 to 1964 - St. Petersburg northeast across the Howard Frankland Bridge to Downtown Tampa - opened as Interstate 4.
  • 1964 to 1967 - Downtown Tampa north to Pasco County - opened as Interstate 75.
  • 1965 - Downtown interchange area - opened as Interstate 4 to the east and west and Interstate 75 heading north.

This numbering configuration lasted until May 14, 1971, when Interstate 4 was truncated and replaced by Interstate 75 from the Downtown Interchange west and south into St. Petersburg. However, the I-75 designation would only last until August 24, 1973, as it was moved onto the then proposed Tampa eastern bypass (originally I-75E) and replaced by Interstate 275.

The remainder of Interstate 275 through St. Petersburg to I-75 near Ellenton was completed in stages between 1978 and 1987. During this time period the freeway was extended south from Downtown St. Petersburg to U.S. 19 south near the north Skyway toll plaza and from Interstate 75 in Manatee County to U.S. 19 north near the south Skyway toll plaza. Those sections of freeway were opened to traffic by 1985. The remaining piece of I-275 though would not open until April 30, 1987 when the current Sunshine Skyway bridge opened to traffic. The new cable-stayed structure replaced the original cantilever spans across Tampa Bay, one of which (the southbound span) was severely damaged in a freighter accident in May 1980.

Bridges along Interstate 275

Sunshine Skyway Bridge

The Sunshine Skyway Bridge from boat on Tampa Bay. 08/13/22

The Sunshine Skyway is a cable-stayed bridge that carries I-275/U.S. 19 across the mouth of Tampa Bay, connecting Palmetto with St. Petersburg. For more information on this famous crossing, please see the Sunshine Skyway Bridge guide.

Dick Misener Bridge

I-275 - Dick Misener Bridge - St. Petersburg, FL

The Dick Misener Bridge spans the Gulf Intracoastal Waterway north of the Sunshine Skyway and south of Maximo Point in St. Petersburg. 08/13/22

Howard Frankland Bridge

Constructed in the late 1950s and opened in January 1960, the Howard Frankland Bridge became the third crossing over Old Tampa Bay to link Hillsborough and Pinellas counties. Named after the businessman who lobbied for its construction, the Howard Frankland was built as a part of Interstate 4 and carried four lanes of traffic (two each direction) separated by a barrier. As traffic demands steadily increased in the 1970s and 1980s, a second span was built parallel to the original span, and opened to traffic in 1990. The new span carried southbound traffic while the 1960 crossing was rehabilitated to accommodate northbound traffic. Today the Howard Frankland bridge carries eight overall lanes (four on each span) over Old Tampa Bay, providing a necessary link between the St. Petersburg and Tampa areas. A Project Development and Environment (PD&E) study preceded work anticipated for 2020-24 to construct a new span to replace the 1960 bridge and upgrade the 1990 crossing with provisions for a regional transit corridor.

Interstate 275 scenes
Shield assemblies for Interstate 275 and U.S. 19 stand at the north exit of the south Skyway rest area. Heading toward I-275/U.S. 19 south also takes drivers to the entrance to the South Skyway Fishing Pier. 10/08/16
26th Avenue South at the on-ramp to Interstate 275 south. The freeway continues southward from this half diamond interchange toward the Sunshine Skyway bridge and the Bradenton area. 08/24/13
The ramp from Interstate 275 north at Exit 20 connects with 31st Street S in St. Petersburg. The left exit ramp was intended to connect with the northbound beginning of the St. Petersburg-Clearwater Expressway. 03/25/07
Ramps at Exit 20 curve eastward to intersect 31st Street S just beyond the overpasses for Interstate 275. 03/25/07
The St. Petersburg-Clearwater Expressway was proposed northwest from the wye interchange (Exit 20) with 31st Street S to the exchange joining U.S. 19 Alternate and SR 666 at Bay Pines. 03/25/07
The entrance ramp from 31st Street S joins the inside lanes of Interstate 275. 10/15/07
A two lane ramp merges onto the left side of Interstate 275 from the planned St. Petersburg-Clearwater Expressway. The freeway was planned in the 1970s as a 20.2 mile Interstate grade highway. Cancellation of the highway occurred on May 12, 1978 because the new Interstate was more than 10 miles in length. A federal rule instituted at that time indicated that any new Interstate consist of a "final link" in the Interstate system, rather than a new wholesale facility. 10/15/07
An original Interstate 75 shield was posted at Grace Street west at Dale Mabry Highway, just south of the U.S. 92 interchange with I-275, until 2008. The "275" overlay had faded to reveal "75" over the course of three decades. 04/02/06, 05/11/07
An overhead was posted just north of Grace Street for the northbound on-ramp for I-275 to the Downtown Interchange with I-4. It was removed during work to upgrade the freeway. 04/02/06
Scott Street extends east from the Downtown West Interchange to Orange Avenue south for Amalie Arena and the Ybor City Historic District. 10/16/16
Scott Street continues east from Morgan Street to Jefferson Street and Orange Avenue south toward the Channel District and entrance ramps for I-275 northbound at the Downtown Interchange. 10/16/16
Ashley Drive provides a direct route to Interstate 275 north from Tyler Street and Downtown Tampa. 02/23/20
Traffic on Ashley Drive north partitions at a trumpet interchange for Interstate 275. 02/23/20
Orange Avenue is a six lane urban boulevard between the couplet of Pierce and Jefferson Streets on the northeast side of Downtown and I-275 adjacent to the Downtown Interchange with I-4 east. 03/31/21
Separate entrance ramps join Orange Avenue with the left side of I-275 north toward Seminole Heights and the right side of I-275 north for Interstate 4 east. 03/31/21
Floribraska Avenue east at the northbound entrance ramp for Interstate 275. The four lane boulevard links U.S. 41 Business (Tampa Street / Florida Avenue) in Tampa Heights with U.S. 41 (Nebraska Avenue) in the VM Ybor neighborhood of Tampa. 07/14/16
Floribraska Avenue west at the half diamond interchange with I-275 north in Tampa. 01/17/20
Bird Street expands into a four lane boulevard as it connects U.S. 41 (Nebraska Avenue) and U.S. 41 (Florida Avenue) with Interstate 275 south at Seminole and Lamar Avenues. 01/18/14
Lamar Avenue forms a northbound service road from the I-275 northbound off-ramp to Bird Street for Waters Avenue.
The shield for I-275 south was askew and faced perpendicular to Bird Street westbound. 01/18/14

Photo Credits:

  • 04/02/06 by AARoads and Justin Cozart.
  • 03/25/07 by AARoads.
  • 05/11/07 by AARoads.
  • 10/15/07 by AARoads.
  • 08/24/13 by AARoads.
  • 01/18/14 by AARoads.
  • 07/14/16 by AARoads.
  • 10/08/16 by AARoads.
  • 10/16/16 by AARoads.
  • 01/17/20 by AARoads.
  • 02/23/20 by AARoads.
  • 03/31/21 by AARoads.

Connect with:
Interstate 4
Interstate 75
Interstate 175 - South Bay Drive
Interstate 375 - North Bay Drive
U.S. 19
U.S. 41
U.S. 92
State Road 60
State Road 686 - East Bay Drive / Roosevelt Boulevard
State Road 694 / County Road 694

Page Updated 10-20-2023.

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