|left SR 25 begins west of Porter, where NH 25 crosses the
Maine-
New Hampshire border. The western part of the highway runs along the
Ossipee River on the southern edge of town. SR 25 intersects and
overlaps with
SR 160 before crossing the river, passing through the extreme northeast corner of
Parsonsfield en route to
Cornish, where it meets
SR 5. On the north side of town, SR 5 and SR 25 have a brief concurrency before meeting
SR 117. SR 5 splits off northeast, crossing the
Saco River with SR 117 in tow, while SR 25 joins SR 117 south towards
Limington. After crossing the town line, SR 117 splits off with SR 25 continuing southeast through town. The highway crosses
SR 11 and then over the Saco River into
Standish. SR 25 meets the southern terminus of
SR 113 and crosses
SR 35 before crossing into
Gorham. SR 25 overlaps briefly with
SR 112 before reaching the town center, where it runs concurrently with
US 202 and
SR 4, crossing
SR 114 in the process. SR 25 crosses into the city of
Westbrook, where it uses Wayside Drive and the Westbrook Arterial to bypass the busy Main Street.
SR 25 Business, a former alignment of SR 25, serves this area. The highway crosses into
Portland and immediately interchanges with the
Maine Turnpike (I-95) at exit 47, thereafter meeting its business route and proceeding into downtown on Brighton Avenue. SR 25 crosses
SR 9 (
Stevens Avenue), then turns onto Deering Avenue, crossing over I-295/US 1 without an interchange. The signed eastern terminus of SR 25 is at the end of Deering Avenue at Park Street (
SR 22). However, state route logs indicate SR 25 continuing along SR 22 to terminate at State Street (
SR 77). Both SR 22 and SR 25 officially terminate at SR 77, but SR 25 is not signed at the intersection. ==History==