Below is a list of Marylan state highways, their lengths, termini, and the counties they pass through. Except for roads in Baltimore, Maryland maintained by the Baltimore Department of Transportation and toll roads maintained by the Maryland Transportation Authority, Maryland state highways are maintained by the Maryland State Highway Administration. The longest Maryland state highway is Maryland Route 2, at 79.24 miles (127.52 km), and the shortest Maryland state highway is (unsigned) Maryland Route 963 at 0.01 miles (0.016 km).