SR 643 (Fairfax County)
State Route 643 is a major secondary road in western Fairfax County, Virginia that has a length of 10.12 miles (16.29 km). Its western terminus is SR 645 near Clifton. SR 643's eastern terminus is Fairfax County Parkway near Burke. This route is composed of four disconnected segments: Henderson Road, which runs for 6.12 miles; Old Ox Road, which runs for one block; Lee Chapel Road; and Burke Centre Parkway.
Read more about this topic: List Of Secondary State Highways In Virginia