List of state routes in Maine

State routes in Maine are highways within the Maine State Highway System that are signed and maintained by the Maine Department of Transportation, and not U.S. Routes or routes of the Interstate Highway System. Some parts of these roads are maintained by local government authorities. There are over 100 State routes.

Note about termini: In several cases there is disagreement between the administrative termini of a route (which are defined by MaineDOT) and the termini signed in the field. All termini listed on this page are administrative termini; discrepancies are listed on the respective pages.

Routes crossing state borders
New Hampshire Route 113B and New Hampshire Route 153 enter Maine. NH 153 remains entirely under NHDOT maintenance. NH 113B is a loop of Maine State Route 113. The spans of NH 113B within Maine are considered unnumbered highway by the MDOT. SR 113 enters New Hampshire several times but remains under MDOT maintenance.

• New England 1.svg New England Route 1
 * New England Interstates

• New England 9.svg New England Route 9

• New England 11.svg New England Route 11

• New England 15.svg New England Route 15

• New England 18.svg New England Route 18

• New England 19.svg New England Route 19

• New England 20.svg New England Route 20

• New England 24.svg New England Route 24

• New England 25.svg New England Route 25

• New England 26.svg New England Route 26