From Smyrna, the road travels due east into Houlton, sharing a concurrency with U.S. Route 1 for just under half a mile, before heading east and terminating just north of Houlton International Airport at I-95 Exit 305, the last exit before it changes to Route 95.
Maine | Portland, Maine | U.S. Route 66 | U.S. Route 1 | Bangor, Maine | Brunswick, Maine | Bar Harbor, Maine | U.S. Route 6 | U.S. Route 101 | Route 66 | Lewiston, Maine | U.S. Route 30 | New Jersey Route 4 | European route E65 | U.S. Route 40 | California State Route 1 | Augusta, Maine | Waterville, Maine | U.S. Route 1 in Maine | University of Maine | Pennsylvania Route 309 | Houlton, Maine | European route E18 | U.S. Route 23 | Fryeburg, Maine | European route E4 | U.S. Route 9 in New York | U.S. Route 11 | Pennsylvania Route 82 | Maine-et-Loire |