US 1 highlighted in red | ||||
Route information | ||||
Maintained by MDSHA, BCDOT | ||||
Length | 80.86 mi[1][2] (130.13 km) | |||
Existed | November 11, 1926[3]–present | |||
Tourist routes | ![]() ![]() | |||
Major junctions | ||||
South end | ![]() | |||
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North end | ![]() | |||
Location | ||||
Country | United States | |||
State | Maryland | |||
Counties | Prince George's, Howard, Baltimore, City of Baltimore, Harford, Cecil | |||
Highway system | ||||
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U.S. Route 1 (US 1) is the easternmost and longest of the major north–south routes of the older 1920s era United States Numbered Highway System, running from Key West, Florida, to Fort Kent, Maine. In the U.S. state of Maryland, it runs 81 miles (130 km) from the Washington, D.C. line to the Pennsylvania state line near the town of Rising Sun.
US 1 is paralleled by several major highways as it passes through Maryland, including Interstate 95 (I-95), the Baltimore–Washington Parkway (B–W Parkway), US 29, and US 301. Thus, US 1 has lost its significance as a long distance route through the state. It is often congested, however, because it remains a major route in the individual towns it traverses.
Maryland HLR
was invoked but never defined (see the help page).Maryland HLR 2005
was invoked but never defined (see the help page).