The following highways are numbered 551:

Canada

Highway 551

Korea, South

Jungang Expressway Branch

Norway

* Norwegian National Road 551

United States

County Route 551 (New Jersey) County Route 551 (CR 551) is a county highway in the U.S. state of New Jersey. The highway extends from Pennsville-Salem Road ( Route 49) in Pennsville Township to Penn Street (Interstate 676 / U.S. Route 30) in Camden. Route description CR 5 ...

County Route 551 ((Erie County, New York)) * OH-551

Ohio State Route 551 State Route 551 (SR 551) is an east-west state highway in southern Ohio. Its western terminus is at a T-intersection with SR 220 about southwest of Waverly, and its eastern terminus is at a T-intersection with SR 104 approximately ...

Oregon Route 551 Oregon Route 551 (OR 551) is an Oregon state highway that runs between the cities of Wilsonville and Hubbard. It is known as the Wilsonville-Hubbard Highway No. 51 (see Oregon highways and routes) and is also called the "Hubbard Cutoff." It is ...

Pennsylvania Route 551 Pennsylvania Route 551 (PA 551) is a state highway located in Beaver, Lawrence, and Mercer counties in Pennsylvania. The southern terminus is at PA 18 in Beaver Falls. The northern terminus is at PA 18 near West Middlesex. Though officiall ...

Puerto Rico Highway 551 {{Road index, 551