Maryland Route 55 (MD 55) is a state highway in the U.S. state of Maryland. Known as Vale Summit Road, the state highway runs 2.53 miles (4.07 km) from MD 36 in Vale Summit north to U.S. Route 40 Alternate (US 40 Alt.) in Clarysville. MD 55 connects the La Vale area with Midland in the upper Georges Creek Valley in northwestern Allegany County. MD 55 was paved from Clarysville to Vale Summit around 1921 and extended south to Midland in the late 1930s. The southern terminus of the state highway was truncated at Vale Summit when MD 36 took over part of the highway for a new alignment in the early 1970s.