Interstate 4 (I-4) is an Interstate Highway located entirely within the US state of Florida, maintained by the Florida Department of Transportation (FDOT). Spanning 132.30 miles (212.92 km) along a generally southwest–northeast axis, I-4 is entirely concurrent with State Road 400 (SR 400). In the west, I-4 begins at an interchange with I-275 in Tampa. I-4 intersects with several major expressways as it traverses Central Florida, including US Highway 41 (US 41) in Tampa; US 301 near Riverview; I-75 near Brandon; US 98 in Lakeland; US 27 in unincorporated Davenport; US 192 in Celebration; Florida's Turnpike in Orlando; and US 17 and US 92 in multiple junctions. In the east, I-4 ends at an interchange with I-95 in Daytona Beach, while SR 400 continues for roughly another four miles (6.4 km) and ends at an intersection with US 1 on the city line of Daytona Beach and South Daytona.
Approaching Malfunction Junction on westbound I-4
I-4 westbound approaching SR 535 in Lake Buena Vista
Approaching Downtown Orlando on eastbound I-4 (photo prior to I-4 Ultimate improvements)
Eastern terminus of I-4 at I-95 in Daytona Beach
Interstate 275 (I-275), located in Florida, is a 60-mile-long (97 km) auxiliary Interstate Highway serving the Tampa Bay area. Its southern terminus is at I-75 near Palmetto, where I-275 heads west towards the Sunshine Skyway Bridge crossing over Tampa Bay. From that point, I-275 passes through St. Petersburg before crossing Tampa Bay again on the Howard Frankland Bridge, then continues through the city of Tampa, where it connects to an interchange with I-4 in Downtown Tampa. After the interchange, I-275 passes north through the Tampa suburbs to its northern terminus at I-75 in Wesley Chapel.
Old I-275 shield in St. Petersburg
Model of the Downtown Distributor (c. 1960), from Malfunction Junction (right) to Hillsborough River (upper left)
The original plans called for I-75 to end in Tampa.
I-275 entering Downtown Tampa