Maryland Route 166

Maryland Route 166 marker
Maryland Route 166
Map
Maryland Route 166 highlighted in red
Route information
Maintained by MDSHA
Length2.71 mi[1] (4.36 km)
Existed1927–present
Major junctions
South end I-195 in Arbutus
Major intersections MD 372 in Catonsville
North end MD 144 in Catonsville
Location
CountryUnited States
StateMaryland
CountiesBaltimore
Highway system
MD 165 MD 168

Maryland Route 166 (MD 166) is a state highway in the U.S. state of Maryland. The state highway runs 2.71 miles (4.36 km) from Interstate 195 (I-195) in Arbutus north to MD 144 in Catonsville. MD 166 consists of two sections: a short freeway section that serves as a northern continuation of I-195 and provides access to the University of Maryland, Baltimore County (UMBC), and a segment of Rolling Road, a major north–south highway in western Baltimore County. Rolling Road dates to the colonial era as a highway used to transport tobacco from plantations to river ports. North Rolling Road, which connects Catonsville with Woodlawn and Milford Mill, has always been a county highway. South Rolling Road was constructed as a state highway by the early 1920s between what were to become U.S. Route 1 (US 1) and US 40. Parts of South Rolling Road were transferred to county maintenance after they were severed by the construction of I-95 and a freeway relocation of the southern end of MD 166 in the early 1970s.

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