sentences:  For a list of very short Virginia primary state highways, see List of primary state highways in Virginia shorter than one mile.State Route 217 is the designation for the roads on the grounds of the Southwestern Virginia Mental Health Institute (State Street, Morison Drive, Hospital Avenue) in Smyth County that are maintained by the Virginia Department of Transportation.The roads were added to the state highway system in 1932, and the number was in use by 1936.