Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Interstate 4 (I-4) is a 132.30-mile (212.91 km) intrastate Highway located entirely within the state of Florida, United States. It goes from Interstate 275 in Tampa, Florida (27°57 54 N 82°27 11 W / 27.965°N 82.453°W / 27.965; -82.453) to Interstate 95 at Daytona Beach, Florida (29°09 18 N 81°04 34 W / 29.155°N 81.076°W / 29.155; -81.076). It also has the Florida Department of Transportation designation of State Road 400, but only a small portion of the route is signed at the east end. I-4 is currently the lowest-numbered Interstate Highway in the contiguous 48 U.S. states. The combination of the Tampa, Lakeland, Orlando, and Daytona Beach metropolitan areas is often referred to as the I-4 Corridor, since the freeway connects all four.