Maryland Route 177

Maryland Route 177
Mountain Road
Maryland Route 177 highlighted in red
Route information
Maintained by MDSHA
Length	10.92 mi[1] (17.57 km)
Existed	1927–present
Major junctions
West end	MD 2 in Pasadena
Major intersections	MD 10 in Pasadena MD 648 in Pasadena MD 607 in Jacobsville MD 100 in Jacobsville
East end	Gibson Island
Location
Country	United States
State	Maryland
Counties	Anne Arundel
Highway system
Maryland highway system Interstate US State Scenic Byways
← MD 176 → MD 178

Maryland Route 177 (MD 177) is a state highway in the U.S. state of Maryland. Known as Mountain Road, the highway runs 10.92 miles (17.57 km) from MD 2 in Pasadena east to Gibson Island. MD 177 serves as an arterial highway through Pasadena, Jacobsville, and the Lake Shore area of northeastern Anne Arundel County. The highway is paralleled by MD 100 through Pasadena and Jacobsville. MD 177 originally began near what is now its western intersection with MD 648, which was originally part of MD 2. A short section of the highway was built in Pasadena in the early 1910s. MD 177 was extended east through Jacobsville in the early 1920s and to Gibson Island in the late 1920s. The highway was extended west in the late 1930s after MD 2 was relocated to its present four-lane divided highway. A freeway section of MD 177 was constructed between MD 3 in Glen Burnie and MD 2 in the mid-1960s; the freeway was renumbered MD 100 when that highway was completed from Pasadena to Jacobsville in the early 1970s. Congestion east of MD 100 led to the addition of a reversible lane in 1999.