High Quality Content by WIKIPEDIA articles! Interstate 275 (I-275) in the State of Florida is a 60.7 miles (97.7 km) long highway, serving the Tampa Bay Area. Its southern terminus is at Interstate 75 near Palmetto, where I-275 heads west towards the Sunshine Skyway Bridge crossing over Tampa Bay. I-275 then passes through St. Petersburg before crossing Tampa Bay once again on the Howard Frankland Bridge, and then it enters the City of Tampa, where it has an interchange with Interstate 4 in the middle of Tampa. After this interchange, I-275 passes north through the suburbs of Tampa to its northern terminus at Interstate 75 in Wesley Chapel.