from Silver Spring to Ellicott City. MD 33 Maryland Route 33 was the designation for what is now MD 17 between Brunswick and Wolfsville in western Frederick County. The state highway was one of the original state-numbered highways marked in 1927. MD 33 was replaced with MD 17 when the two highways swapped numbers in 1940. MD 37 (1927–1935) Maryland Route 37 was the designation for what is now US 219 from the West Virginia state line near Redhouse north through Oakland to US 40 (now US 40 Alternate) at Keyser's Ridge in Garrett County. The state highway was one of the original state-numbered highways marked in 1927. MD 37 was replaced with a southern extension of US 219, which formerly ended at US 40 east of Grantsville, in 1935. MD 37 (1963–1998) Maryland Route 37 was the designation for a short stretch of McDonogh Road around its overpasses of Gwynns Falls, CSX's Hanover Subdivision, I-795, and the Baltimore Metro Subway near Garrison in western Baltimore County. The Maryland State Roads Commission relocated the road and built new bridges over Gwynns Falls and what was then the Western Maryland Railway between 1940 and 1942. The road was brought into the state highway system and designated MD 37 in 1963 and removed from the state highway system in 1998. MD 41 Maryland Route 41 was the designation for the highway between US 219 in Oakland and MD 38 in Deer Park in southern Garrett County. The first segment of the highway was completed from Oakland to Mountain Lake Park by 1927. The final portion of MD 41 was completed in 1938. The state highway was replaced by MD 135 in 1956. MD 44 Maryland Route 44 was the designation for the access road from MD 56 south to Fort Frederick State Park near Big Pool in western Washington County. The access road was designated MD 44 between 1946 and 1969. MD 45 Maryland Route 45 ran along Water St. in Frostburg. MD 46 Maryland Route 46 is the former designation of the segment of I-195 between MD 295 and BWI Airport in Linthicum in northwestern Anne Arundel County. MD 46 was assigned when the connector between the Baltimore–Washington Expressway and the new Friendship International Airport opened in 1950. The designation was replaced by I-195 when the Interstate fully opened in 1990. MD 48 Maryland Route 48 was the designation for Pine