Ohio State Route 677

State Route 677
State Route 677
Route information
	Maintained by ODOT
Length	4.78 mi (7.69 km)
Existed	1937–present
Major junctions
South end	US 50 near McArthur
North end	SR 278 in Zaleski
Location
Country	United States
State	Ohio
Counties	Vinton
Highway system
	Ohio State Highway System; Interstate; US; State; Scenic;

State Route 677 (SR 677) is a nearly 5-mile-long (8.0 km) north–south running state route existing entirely in Vinton County, Ohio. Its southern terminus is at US 50, slightly to the east of McArthur in Elk Township, and its northern terminus is at SR 278 in Zaleski. The route passes through rural east-central Vinton County while connecting the two towns. Locally, the route is known as Powder Plant Road, as an Austin Powder Company explosives plant lies along the route.