Maryland Route 66

Maryland Route 66 marker
Maryland Route 66
Map
Maryland Route 66 highlighted in red
Route information
Maintained by MDSHA and Town of Smithsburg
Length12.84 mi[1] (20.66 km)
Existed1927–present
Major junctions
South end
Major intersections
North end MD 64 near Smithsburg
Location
CountryUnited States
StateMaryland
CountiesWashington
Highway system
MD 65 MD 67

Maryland Route 66 (MD 66) is a state highway in the U.S. state of Maryland. Known for most of its length as Mapleville Road, the state highway runs 12.84 miles (20.66 km) from U.S. Route 40 Alternate (US 40 Alternate) in Boonsboro north to MD 64 near Smithsburg. MD 66 parallels the western flank of South Mountain in eastern Washington County, connecting Boonsboro and Smithsburg with Interstate 70 (I-70) and US 40. MD 66 was constructed in the late 1920s and early 1930s from Boonsboro to Cavetown. The state highway was extended north through Smithsburg after MD 64 bypassed the town in the late 1950s.

  1. ^ Cite error: The named reference Maryland HLR was invoked but never defined (see the help page).