 SR 13 parallels US 60 to the south through eastern Cumberland County and western Powhatan County and passes through the latter county's seat of Powhatan.The state highway is the only state-numbered highway in Virginia that shares a number with a U.S. Highway but does not form a state-numbered extension of that U.S. Highway.SR 13's number comes from being a segment of the original cross-state SR 13 in 1918; that highway included portions of modern US 60.