Maryland Route 81

Maryland Route 550
Maryland Route 550 highlighted in red
Route information
Maintained by MDSHA
Length:	24.43 mi (39.32 km)
Existed:	1933 – present
Tourist routes:	Journey Through Hallowed Ground Byway
Major junctions
South end:	MD 26 in Libertytown
	MD 194 in Woodsboro MD 77 in Thurmont US 15 in Thurmont MD 491 in Fort Ritchie
North end:	Pen Mar Road in Fort Ritchie
Location
Counties:	Frederick, Washington
Highway system
Maryland highway system Interstate US State Scenic Byways ← MD 547 MD 552 → ← I-81 MD 82 →

MD 194 in Woodsboro
MD 77 in Thurmont
US 15 in Thurmont

Maryland Route 550 (MD 550) is a state highway in the U.S. state of Maryland. The state highway runs 24.43 miles (39.32 km) from MD 26 in Libertytown north to Pen Mar Road in Fort Ritchie. MD 550 runs southeast–northwest across central Frederick County, connecting Fort Ritchie in the northeastern corner of Washington County and Libertytown with the towns of Thurmont and Woodsboro and the smaller communities of Creagerstown and Sabillasville. South of the highway's junction with U.S. Route 15 (US 15) in Thurmont, the state highway passes through the wide valley of the Monocacy River; to the north, the highway passes along the northern edge of and crests South Mountain near Blue Ridge Summit, Pennsylvania.