The Middlesex Greenway is a 3.5 miles (5.6 km) rail trail in New Jersey Metuchen, Edison and Woodbridge. It is part of the Middlesex County Park System. It makes up a portion of the East Coast Greenway. The trail begins at Crows Mill Road near William Street in the Fords/Keasbey section of Woodbridge and terminates in Metuchen at Middlesex Avenue, with 12 entry points. Construction costs were $5 million. Expansion to Perth Amboy and South Plainfield has also been proposed.