Interstate 4 (I-4) is a 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 surface street in Daytona Beach from I-95 to US Highway 1 (US 1, also SR 5). I-4 has no auxiliary Interstate Highway spurs or loops; however, it intersects several tolled expressways—designated as state roads—that serve as spur and partial loop routes in the Orlando metropolitan area, which (unlike most major U.S. cities) lacks any auxiliary interstate highways.