Downtown Tampa Interchange

Tampa is experiencing rapid growth, and the downtown interchange is a known chokepoint.

Tampa’s downtown and surrounding urban core  is rich with cultural and historical resources. The downtown interchange and corridors of I-275, I-4 and the Selmon Expressway are key links in Florida’s interstate freeway system providing freight and passenger mobility. They serve as important commuter routes to suburban and urban communities in the Tampa Bay metropolitan area providing access to jobs, medical facilities, universities and cultural resources.

Wait, didn’t you fix that already?

FDOT completed operational improvements to the Downtown interchange in 2006, but FDOT has had a long-standing plan to redesign and reconstruct the Downtown Tampa interchange. The 2006 improvements can be compared to interim improvements in a home renovation. Homeowners may only have funding to replace their floors and windows, but they know that eventually they should replace the HVAC, plumbing, electrical, etc. as funding becomes available. FDOT has planned on redesigning and rebuilding the Downtown Tampa interchange since the late 1980s. The interchange is part of the original Tampa Interstate Study. The current interchange concept has been designed to modern standards, using the most recent traffic data and demographic projections. The design concept is being evaluated under current environmental assessment policies and procedures and a Locally Preferred Alternative has been identified as part of the SEIS.

Click graph to enlarge

Project Status


Held February 2020


Under Evaluation

The Downtown Tampa Interchange, Westshore Area Interchange, and the Westshore to Downtown Tampa Corridor projects are all part of a long-standing plan to improve and modernize Tampa’s interstate system, originally called the Tampa Interstate Study (TIS). The TIS required the most rigorous evaluation process in transportation planning – an Environmental Impact Statement (EIS).

In response to community feedback, FDOT is working with the Federal Highway Administration to prepare a Supplemental Environmental Impact Statement (SEIS) to determine the preferred alternative for improving Tampa’s interstates and evaluating potential impacts. Express lanes are one of the concepts being evaluated in the SEIS.

During October 2017, FDOT held a public workshop to review the concepts and get community input on which concepts will be carried forward for detailed study. A second public workshop was held in May 2019 to review proposed alternative options. A public hearing was held in February 2020. The project is under evaluation.

On October 1, 2019, the Florida Department of Transportation presented information on the Locally Preferred Alternative (LPA) for the Tampa Interstate Study (TIS) Supplemental Environmental Impact Statement (SEIS) to the Hillsborough MPO Board. FDOT will recommend the LPA to the Federal Highway Administration (FHWA) for approval. A public hearing is anticipated to take place in early 2020 and the public is invited to continue to provide comments on the study.

Locally Preferred Alternative

To view the latest Fact Sheet on the SEIS Locally Preferred Alternative, which includes Downtown Tampa Interchange, click here.

To view concept plans for the Downtown Tampa Interchange Locally Preferred Alternative, please click here.

To view fly through videos on the proposed improvements, click here for the I-275/I-4 Interchange – Locally Preferred Alternative video and the I-275/I-4 Interchange – Locally Preferred Alternative (Technical Flyover Animation) video.


For more information on the SEIS, click here.

Downtown Quick Facts
Living Within 3 Miles of Downtown
Living in Downtown Core
Residential Units Under Construction

Tampa Bay Next will provide multimodal transportation choices to:

  • Distribute traffic more evenly for a growing and changing downtown and urban core
  • Efficiently move people and goods with connectivity throughout the region
  • Enhance travel speeds to key destinations and reduce backups
  • Integrate transit choices for commuters, visitors and residents
  • Connect neighborhoods with public spaces such as parks, greenway and a trail
The Florida Department of Transportation is required to comply with various non-discrimination laws and regulations, including Title VI of the Civil Rights Act of 1964. Public participation is solicited without regard to race, color, national origin, age, sex, religion, disability, or family status.
Comuníquese con nosotros: Nos importa mucho la opinión del público sobre el proyecto. Si tiene preguntas o comentarios, o simplemente desea más información, por favor comuníquese con nosotros. Nuestra representante en español es: Manuel Flores, Departamento de Transporte de la Florida, (813) 975-4248,