Florida Highway System

Florida had 124,581 miles of public road in 2024, and the state highway agency owned 12,273 of those miles with 46,021 lane-miles, according to FHWA's Highway Statistics 2024 tables (FHWA Table HM-10; FHWA Table HM-81).

The state system is small in miles and large in traffic. FHWA's 2024 table of state highway agency roads puts Florida's state-owned roads at 9.9 percent of statewide public road miles and 16.4 percent of lane-miles, yet they carry 54.4 percent of the daily vehicle miles FHWA counts on the classified road network, about 370.6 million vehicle miles a day (FHWA Table HM-81). FHWA notes that its daily travel figure is in thousands and does not include the rural minor collector or rural and urban local functional systems, so the share covers only the road classes FHWA counts there.

A lane-mile counts each lane separately. FDOT's mileage glossary defines lane miles as the product of centerline miles and number of lanes, so a four-lane road two miles long has eight lane miles (FDOT mileage reports). That is why Florida's 279,787 lane-miles in 2024 are a little over twice its 124,581 road miles (FHWA Table HM-60).

Most Florida road miles belong to counties and cities, not the state: FHWA's 2024 ownership table gives counties 70,770 miles and towns and cities 39,259 miles, against 12,273 for the state highway agency (FHWA Table HM-10).

FDOT itself is headquartered at 605 Suwannee St., Tallahassee, FL 32399, phone (850) 414-4100 (About FDOT). For live closures statewide, FDOT points drivers to FL511.com (FDOT districts).

The Florida Department of Transportation is decentralized in accordance with legislative mandates into the seven districts its districts page lists, and each district is managed by a District Secretary (FDOT districts).

District Five in Central Florida has the most state highway, at 8,952 total lane miles with 1,203 bridges across nine counties, and District Two in Northeast Florida follows with 8,497 lane miles and 1,331 bridges across 18 counties (FDOT districts). Each district also has a Public Information Office that reports to the District Secretary (FDOT districts).

Four main Interstates run in Florida: I-75 for 470.74 miles, I-95 for 381.93 miles, I-10 for 362.02 miles and I-4 for 131.89 miles, in FHWA's route log as of January 2026 (FHWA Interstate route log, Table 1).

FHWA's main route table lists Pensacola, Tallahassee and Jacksonville on I-10 and Tampa, Lakeland and Orlando on I-4. Shorter auxiliary routes serve the cities: FHWA's auxiliary route table lists I-295 around Jacksonville at 60.86 miles and I-275 through St. Petersburg and Tampa at 60.26 miles, plus I-395 at 1.29 miles in Miami and I-175 at 1.29 and I-375 at 1.22 miles, both listed for Tampa-St. Petersburg (FHWA Interstate route log, Table 2). FHWA's 2024 lane-length table counts 3,256 rural and 5,600 urban Interstate lane-miles in Florida, 8,856 combined (FHWA Table HM-60).

Florida's Turnpike System is operated by Florida's Turnpike Enterprise, a separate business unit of FDOT; its Mainline runs 312 miles through 11 counties of the peninsula, and the whole Turnpike Enterprise system totals 515 centerline miles (Florida's Turnpike FAQ; FDOT districts).

Construction began in the mid-1950s and the original 110-mile stretch of roadway was completed in 1957, under the name Sunshine State Parkway; it has since been designated the Ronald Reagan Turnpike. The Mainline, State Road 91, runs from the Golden Glades interchange north of Miami to Wildwood, and the Turnpike Extension, State Road 821, runs 47 miles to near Homestead. The system also includes the Sawgrass, Seminole and Beachline expressways, the Southern Connector Extension, the Veterans Expressway, the Suncoast Parkway, the Polk Parkway, the Western Beltway, the I-4 Connector and the First Coast Expressway. Florida's Turnpike Enterprise was formed in April 2002 as a separate business unit of FDOT (Florida's Turnpike FAQ).

Tolls on Florida's Turnpike are user fees charged by the number of axles and the distance driven, and the Turnpike says all toll revenue is reinvested in highway projects statewide. SunPass is the state's prepaid toll program; transponders are sold at retailers, online or through the SunPass Customer Service Center at 1-888-TOLL-FLA (1-888-865-5352). Drivers without a transponder where cash is not taken receive an invoice (Florida's Turnpike FAQ). FDOT says the Turnpike Enterprise system generates over $1.3 billion in annual revenues and processes more than 2.5 billion transactions a year (FDOT districts).

Two Florida's Turnpike details matter on a long drive. There are eight service plazas on the Mainline, about every 45 miles, open 24 hours a day in the median (Florida's Turnpike FAQ). Motorist assistance on Turnpike roads is available around the clock by dialing *347 (Florida's Turnpike).

The Strategic Intermodal System is Florida's high priority network of transportation facilities important to the state's economy and mobility, which the Governor and Legislature established in 2003 to focus limited state money on interregional, interstate and international travel (FDOT SIS).

FDOT calls the SIS the state's highest priority for transportation capacity investments and a primary focus for carrying out the Florida Transportation Plan, the state's long-range transportation vision and policy plan (FDOT SIS). The SIS page lists FDOT's SIS Planning Manager at (850) 414-4287, 605 Suwannee Street, Tallahassee.

The newest dated statewide figures on this page are FHWA's 2024 tables, dated October 17, 2025, while several FDOT and Turnpike web pages carry older or undated numbers (FHWA Table HM-81).

FDOT's two web pages for District One disagree. The current districts page gives District One 6,680.7 lane miles and 3.3 million residents, while a second District One page lists a State Highway System summary of 1,870 centerline miles and 6,293 lane miles and 1.8 million residents (FDOT districts; FDOT District One). Added up, the seven district figures on the current page come to about 45,912 lane miles, close to FHWA's 46,021 state highway agency lane-miles for 2024, but the district page carries no date.

Florida's Turnpike FAQ still describes its five-year work program as 2021-2025 with more than $7.9 billion in capital improvements, a period that has ended (Florida's Turnpike FAQ). The About FDOT page still presents the FY 2021-2022 annual report as FDOT's Annual Report (About FDOT). FDOT's Certification of Public Road Mileage for the State of Florida by System, dated 5/20/2026 on the FDOT mileage reports page, shows how public road mileage divides among the State Highway System, county roads, city streets and federal agencies, and it is posted as a PDF (FDOT mileage reports). Last verified: October 15, 2026, on the FDOT, Florida's Turnpike and FHWA websites.