highway system in 1956. MD 98 Maryland Route 98 was the designation for Folly Quarter Road, an L-shaped route between MD 32 in Glenelg and MD 144, which had previously been US 40, near Ellicott City in central Howard County. The highway was constructed as a concrete road from the National Pike south and west to near Glenelg by 1921 and completed in 1923. MD 98 was removed from the state highway system in 1956. MD 100 Maryland Route 100 was the designation for the portion of Old Frederick Road from MD 99 at St. Johns Lane near Ellicott City east to the Howard–Baltimore county line at the Patapsco River. Much of the highway was constructed as a macadam road from the river west to approximately the modern intersection of US 29 and MD 99 in 1923. The gap from there to MD 99 was filled with a concrete road between 1930 and 1933. In 1956, the portion of MD 100 from MD 99 at St. Johns Lane to Rogers Avenue was replaced with an extension of MD 99 east along Old Frederick Road and south along Rogers Avenue; the portion of MD 100 east of Rogers Avenue was transferred to county maintenance. MD 101 Maryland Route 101 was the designation for Henryton Road from MD 99 near West Friendship north to the Howard–Carroll county line at the South Branch of the Patapsco River at Henryton. The highway was constructed as a concrete road between 1924 and 1926. MD 101 was removed from the state highway system in 1956. MD 102 Maryland Route 102 was the designation for Maryland Avenue, St. Paul Street, and part of College Avenue in the center of Ellicott City in northeastern Howard County. The highway was improved as a concrete road in 1923. MD 102 was widened and resurfaced in 1954, then removed from the state highway system in 1956. MD 104 Maryland Route 104 was the designation for Ilchester Road from MD 103 near Ellicott City north to the Howard–Baltimore county line at the Patapsco River at Ilchester. The highway was paved from the river south to Landing Road by 1910. The remainder of MD 104 south to MD 103 was constructed between 1930 and 1932. MD 104 was transferred to Howard County maintenance in 1956. MD 105 Maryland Route 105 was the designation for Rogers Avenue from former MD 144 (Main Street) north