West Virginia Route 31

x70px West Virginia Route 31
Route information
Maintained by WVDOH
Length:	36.7 mi (59.1 km)
Major junctions
South end:	WV 16 in Harrisville
	US 50 near Cairo WV 2 near Waverly WV 14 concurrent near Williamstown
North end:	SR 60 in Marietta, Ohio
Location
Counties:	Wood, Ritchie
Highway system
West Virginia Routes State County Turnpikes ← US 30 WV 32 →

West Virginia Route 31 is a north–south state highway in the northwestern portion of the U.S. state of West Virginia. The northern terminus of the route is at the Ohio state line on the Williamstown Bridge over the Ohio River. The southern terminus is at West Virginia Route 16 in Harrisville, West Virginia.

The northernmost extent of the route from West Virginia Route 14 near Interstate 77 Exit 185 southeast of Williamstown to the Ohio state line is not signed.

Major intersections

County	Location	mi	km	Destinations	Notes
Ritchie	Harrisville			WV 16 (Spring Street) – Ellenboro, Grantsville
	​			US 50 east – Clarksburg	south end of US 50 overlap
Wood	Deerwalk			US 50 west / CR 50/16 (Riser Ridge Road) – Parkersburg	north end of US 50 overlap
	​			WV 2 south – Parkersburg	south end of WV 2 overlap
	​			WV 2 north – Wheeling	north end of WV 2 overlap
	Williamstown			WV 14 north to I‑77 – Parkersburg, Marietta, OH	north end of signed WV 31; south end of WV 14 overlap
				WV 14 south – Vienna	north end of WV 14 overlap
				To SR 7 / Williamstown Bridge (SR 60 north) – Marietta
1.000 mi = 1.609 km; 1.000 km = 0.621 mi