High Quality Content by WIKIPEDIA articles! State Road 836, locally known as the Dolphin Expressway, is a 15.373 miles (24.740 km)-long six-lane divided expressway, with the westernmost 14.081 miles (22.661 km) being a tollway, currently extending from just north of the intersection of Southwest 137th Avenue and U.S. Route 41 (SR 90) in Tamiami, eastward past the Homestead Extension of Florida`s Turnpike (SR 821) and Miami International Airport, before intersecting I-95 and ceasing to be a toll road. The easternmost 1.292 miles (2.079 km) of SR 836 between I-95 and SR A1A is signed Interstate 395. The Dolphin Expressway is maintained and operated by the Miami-Dade Expressway Authority, while the I-395 section is maintained by FDOT. The Dolphin Expressway from the Palmetto Expressway to I-95 opened in 1969, with the I-395 section opening in 1971, the extension to the HEFT opening in 1974 and a second western extension opening in 2007.