Puerto Rico Highway 26 (PR-26),[a] called the Román Baldorioty de Castro Expressway, is the main highway to the Luis Muñoz Marín International Airport and is connected to PR-66.[2] It was converted to a freeway to minimize the traffic in PR-3 and PR-17, to grant better access to the Airport.[3][4] Several exits exist to provide access to PR-187 (the main route to the Piñones area), PR-37 (Isla Verde) and PR-22 (José de Diego).[5] PR-26 is 15.1 km (9.4 mi) long.[6]