US 201 north end, 1926-present
near Jackman
US 1 north end, 1926-present
Ft. Kent
US 2 east end, 1960s(?)-present
Houlton
US 2 east end, 1960s(?)-present
Houlton
US 202 east end, 1926-1980s(?)
Bangor. (As of 2007, this was still signed as the endpoint of US 202, but I'm told ME DoT actually truncated it to the I-395 interchange way back in the 1980s.)
US 202 east end, 1980s(?)-present
Bangor. Apparently in the late 1980s US 202 was officially truncated to this interchange, but as of 2007 signage still reflected the original terminus downtown.
US 201 south end, 1926-1960s(?)
Brunswick
US 201 south end, 1960s(?)-present
Brunswick
US 302 east end, 1935-1970s(?)
Portland
US 302 east end, 1970s(?)-present
Portland (this is the official endpoint, despite the "End US 302" sign posted a few blocks south of here, and other US 302 signs along Park Av.)
US 302 west end, 1960s(?)-present
Montpelier
US 302 west end, 1935-1960s(?)
Montpelier
US 5 north end, 1926-present
Derby Line
US 5 south end, 1970s(?)-present
New Haven
US 5 south end, 1926-1970s(?)
New Haven
US 7 north end, 1926-1960s(?)
Highgate Springs
US 7 north end, 1960s(?)-present
Highgate Springs
US 7 south end, 1980s-present
Norwalk
US 7 south end, 1928-present
Norwalk
US 3 north end, 1926-28, 39-40
Colebrook
US 3 north end, 1928-1937
West Stewartstown
US 3 north end, 1937-1939
Pittsburg
US 3 north end, 1940-present
Connecticut Lakes
US 3 south end, 1926-1970s(?)
Boston
US 3 south end, 1970s(?)-present
Boston
US 4 east end, 1956-present
Portsmouth
US 4 east end, 1940-1956
Portsmouth
US 4 east end, 1926-1940 (possible)
Portsmouth
US 6 east end, 1926-1950s
Provincetown
US 6 east end, 1950s-present
Provincetown
US 20 east end, 1926-1930s
Boston
US 20 east end, 1930s-1970s(?)
Boston
US 20 east end, 1970s(?)-present
Boston
US 44 east end, 1934-present
Plymouth
