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Maine State Highway System
| Maine State Highway System | |
|---|---|
   Standard markers in Maine | |
| System information | |
| Length | 22,236 mi[1] (35,785 km) |
| Highway names | |
| Interstates | Interstate x (I-X) |
| US Highways | U.S. Route x (US-X) |
| State | State Route x or Route x (SR X) |
| System links | |
In the state of Maine, the Maine Department of Transportation (MaineDOT) has a system of numbered highways, defined as the "connected main highways throughout the state which primarily serve arterial or through traffic." As of 2006, 22,236 miles[1] of roadway are included in the highway system, including Interstate highways, U.S. Routes, state highways, and other urban and rural local roads.
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