Interstate 4 Westbound Lanes to Close in Tampa

The Florida Department of Transportation will close I-4 at the Downtown Tampa Interchange for maintenance work.

Updated on Sept. 21, 2026 in Car Maintenance

Isometric editorial illustration of a concrete highway interchange at night, using muted geometric blocks and soft amber light, representing transit infrastructure maintenance. — The Florida Department of Transportation will close all westbound lanes of Interstate 4 at the Downtown Tampa Interchange for overnight maintenance from Sept. 21 to Sept. 22. AI Illustration. Upload story photo >

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All westbound lanes of Interstate 4 at the Downtown Tampa Interchange will close starting at 10 p.m. on Monday, Sept. 21, 2026. This closure is scheduled to remain in effect until 5 a.m. on Tuesday, Sept. 22, 2026, to accommodate crews performing essential maintenance.

Why it matters

The overnight closure is part of the ongoing Downtown Tampa Interchange Safety and Operational Improvements project. This initiative aims to enhance the functionality and safety of one of the area's most critical transit hubs for local commuters.

The maintenance closure window lasts from 10 p.m. to 5 a.m. the following morning. During this time, drivers are required to navigate a detour involving State Road 574 and Tampa Street to reach the southbound I-275 entrance ramp.

The players

Florida Department of Transportation

This state agency is responsible for the planning and maintenance of Florida's extensive transportation infrastructure including highways and bridges.

The details

Drivers must take the northbound I-275 entrance ramp toward Exit 46B to bypass the work zone. After turning left onto State Road 574 and again onto Tampa Street, motorists will be able to re-enter the highway system via the southbound I-275 ramp.

The westbound I-4 closure begins at 10 p.m. on Monday, Sept. 21, 2026.
The westbound I-4 closure concludes at 5 a.m. on Tuesday, Sept. 22, 2026.

Roadmap

This maintenance project follows a pattern set by the Downtown Tampa Interchange Safety and Operational Improvements project. These frequent infrastructure upgrades reflect the state's ongoing commitment to modernizing legacy transit hubs to meet current traffic demands.

Commuters traveling through downtown Tampa during the overnight hours should prepare for mandatory detours that will increase travel time. Motorists should follow all posted signage and message boards to ensure they successfully navigate the route onto I-275.

The takeaway

Drivers should plan for extra time if they expect to be on the road during the overnight hours on September 21. Utilizing GPS navigation systems that update in real time can help motorists manage these detour routes more effectively.