U.S. Route 1 in Maine

U.S. Route 1
US 1 highlighted in red
Route information
Maintained by MaineDOT
Length526.05 mi (846.60 km)
Existed1926–present
Major junctions
South end US 1 at the New Hampshire state line in Kittery
Major intersections
North end Route 161 / Route 205 at the Canadian border in Fort Kent
Location
CountryUnited States
StateMaine
CountiesYork, Cumberland, Sagadahoc, Lincoln, Knox, Waldo, Hancock, Washington, Aroostook
Highway system
I-495 US 1A
Route 20N.E. Route 25

U.S. Route 1 (US 1) in the U.S. state of Maine is a major north–south section of the United States Numbered Highway System, serving the eastern part of the state. It parallels the Atlantic Ocean from New Hampshire north through Portland, Brunswick, and Belfast to Calais, and then the St. Croix River and the rest of the Canada–United States border via Houlton to Fort Kent. The portion along the ocean, known as the Coastal Route, provides a scenic alternate to Interstate 95 (I-95).