Grays Landing Lock and Dam replaced Lock and Dam 7. It consists of one lock chamber and a fixed-crest dam.
From Pittsburgh take Rt. 279 South (Parkway West) through the Fort Pitt tunnels to I -79. Take I-79 South to the Waynesburg Exit and turn left at the stop sign on Rt. 21 east. Follow Rt. 21 east approximately 15 miles and take the Masontown Exit. Turn left at the stop sign ont Rt. 166 South and follow approximately 4 miles through Masontown to Grays Landing. Follow signs to the facility.
P.O. Box 671, Route 166 Masontown, PA 15461-0671
USACE - US Army Corps of Engineers