State Route 121 (SR121) is a 36-mile-long (58km) state highway in southern Maine. It begins at an intersection with U.S. Route 302 (US302) and SR35 in Raymond and ends in Auburn. It is signed as a north-south highway, which accurately reflects its alignment from Raymond to Oxford, but from there it runs almost due east (and slightly south) to its terminus in Auburn. Its overall routing is roughly L-shaped.

Route description

SR121 begins at an intersection with US302 and SR35 in Raymond, not far from the southern terminus of SR85. It proceeds northward, paralleling SR85 to the west of Panther Pond until reaching its first intersection with SR11 in Casco. It continues north along the west side of Pleasant Lake and Thompson Lake before entering Oxford, where it turns to the east to meet SR26 just south of the Oxford County Regional Airport. SR121 briefly joins SR26 in a wrong-way concurrency before splitting off southeast towards Mechanic Falls (continually signed as "north"). It heads into the town center where it meets the southern terminus of SR124 and SR11 for a second time. From here to its terminus in Auburn, SR121 is overlapped by SR11.

Intersection of SR 121, SR 11, and SR 124 in Mechanic Falls

SR11 and SR121 proceed out of town to the southeast (both signed as "north"), meeting the southern terminus of SR119 before entering Auburn and proceeding towards downtown on Minot Avenue. At the intersection of Minot Avenue and Rotary Street (the latter of which also carries southbound US202, SR4, and SR100 on a one-way pair), SR 11 and SR121 turn north on Washington Street (joining US202, SR 4, and SR 100). Prior to 2023, this intersection was signed as the northern terminus of SR 121. Continuing north, Washington Street meets the southbound lanes at Minot Avenue, then reaches the intersection of Court Street, Union Street, and Minot Avenue, where the SR 121 designation officially ends. SR 4 continues straight onto Court Street while US 202, SR 11 and SR 100 turn east onto Union Street towards Lewiston.

Major intersections

CountyLocationmikmDestinationsNotes
CumberlandRaymond0.000.00US302/ SR35 (Roosevelt Trail)– Casco, Windham, NaplesSouthern terminus
Casco6.7010.78SR11 (Poland Spring Road)– Naples, Auburn
OxfordOxford20.8933.62SR26 north (Main Street)– NorwaySouthern end of SR 26 concurrency
21.3834.41SR26 south (Main Street)– GrayNorthern end of SR 26 concurrency
AndroscogginMechanic Falls25.9241.71SR11 south (South Main Street)/ SR124 north (North Main Street)– West Minot, NaplesSouthern end of SR 11 concurrency; southern terminus of SR 124
Minot29.4547.40SR119 north– HebronSouthern terminus of SR 119
Auburn34.8356.05US202 west/ SR4 south/ SR100 south (Rotary Street) to I-95/ Maine TurnpikeSouthern end of US202/SR4/SR100 concurrency
35.6957.44US202 east/ SR11 north/ SR100 north (Court Street)/ SR4 north (Union Street)– Lewiston, Augusta, FarmingtonNorthern terminus
1.000mi = 1.609km; 1.000km = 0.621mi Concurrency terminus

External links

  • Media related toMaine State Route 121at Wikimedia Commons