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The Florida Department of Transportation (FDOT) is advancing much-needed improvements to Interstate 75 (I-75) in Central Florida, thanks to the historic Moving Florida Forward Infrastructure Initiative (fdot.gov/movingfloridaforward). The I-75 improvement projects are located between State Road (S.R.) 44 in Sumter County and S.R. 326 in Marion County, approximately 30 miles. Construction began in the spring of 2025.
The improvements include the addition of an auxiliary lane in each direction and interchange improvements at S.R. 326 and S.R. 40. The I-75 improvements were evaluated under two separate studies. Public involvement and stakeholder coordination are integral parts of the project development process.
The I-75 improvement projects will address the need for better reliability along the corridor. I-75 experiences frequent congestion due to special events, holidays, and weekend traffic as well as road and lane blockages caused by weather and crashes.
USING THE PROJECT LOCATOR
Click on the project segment of interest on the map to see more information related to each project.
FDOT began construction on the I-75 South project in the spring of 2025 and on the I-75 North project in November 2025.
Find out about lane and ramp closures by clicking the CONSTRUCTION INFORMATION button on the navigation bar above.
FDOT serves the people of Florida by providing a transportation network that is well planned, supports economic growth, and has the goal of being congestion and fatality free. The FDOT Compass helps achieve these goals now and in the future by emphasizing the importance of having clear direction and accountability in transportation. The FDOT Compass centers on Communities, with five pillars surrounding them: Safety, Resiliency, Supply Chain, Technology, and Workforce Development.
The auxiliary lanes – additional roadway pavement marked for travel between interchanges – are expected to reduce travel delays by 88% (southbound direction) and 96% (northbound direction). The improvements will enhance access and promote economic vitality to the communities of Sumter and Marion counties.
Adding 30 miles of auxiliary lanes will help reduce congestion and provide drivers more space and time to merge safely. These improvements will help reduce the number of crashes and will eliminate congestion chokepoints at interchanges.
An estimated 160,000 vehicles a day are expected to travel on the I-75 corridor by 2050. The auxiliary lanes are helping to accommodate a fast-growing area to maintain a better quality of life and robust economic climate.
Current statistics show that 1 in 5 vehicles on the I-75 corridor is a truck. The auxiliary lanes are expected to enhance product distribution by improving travel-time reliability and timely delivery of goods.
Installing smart work-zone technologies will increase safety for drivers and construction workers by preventing collisions, reducing crash damage, and minimizing traffic delays.
The I-75 projects are creating new employment opportunities during construction and increasing economic activity.