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  system for both freight and passenger mobility. While they serve as important commuter routes to suburban and urban communities in the Tampa Bay region providing access to jobs, medical facilities, universities and cultural resources, the Downtown Interchange is a known chokepoint.

Tampa Bay Next will provide multimodal transportation choices to:

• Efficiently move people and goods with connectivity throughout the region
• Enhance travel operations to key destinations and reduce bottlenecks
• Connect neighborhoods with greenway and trail connections

Current Improvements

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The current improvements will enhance the safety and operations for drivers within the interchange and along I-275 and I-4.  The project will also construct connections to the existing trail network, enhance underpasses, add landscaping and create three community spaces with amenities like dog parks, benches, pickleball courts and trees. Additional improvements include:

Southbound I-275 to Eastbound I-4

• Providing a two-lane exit and constructing a new exit ramp bridge (to the inside of the interchange) from southbound I-275 to eastbound I-4
• Changing the eastbound exit ramp from I-4 into Ybor City/East Tampa by relocating access at 14th/15th Streets instead of 21st/ 22nd Streets
• Widening the existing eastbound I-4 frontage road (13th Avenue) to two lanes

Westbound I-4 to Northbound I-275

• Widening the existing single lane ramp from westbound I-4 to northbound I-275 to two lanes
• Adding an additional merge lane on northbound I-275 between I-4 and the Martin Luther King Jr. exit

Westbound I-4 to Southbound I-275

• Widening the existing two-lane ramp from westbound I-4 to southbound I-275 to three lanes
• Widening the shoulders on southbound I-275 between Palm Avenue and Jefferson Street
• Shifting the exit ramp from southbound I-275 into downtown Tampa to the west of the current alignment

Construction Progress, February 2025