Interstate 4 (I-4) is a 132.298-mile-long (212.913 km) intrastate Interstate Highway in the U.S. state of Florida, along a southwest–northeast axis from I-275 in Tampa to I-95 at Daytona Beach. The entirety of I-4 overlaps nearly the entirety of State Road 400 (SR 400), which extends as a contiguous, signed 4.216-mile (6.785 km) surface street in Daytona Beach from I-95 to US Highway 1 (US 1, also SR 5).