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| State Route 9 |
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| Length: | 288.0 mi (463 km) |
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| West end: |  NH 9 in Berwick |
| East end: |  NB 1 in Calais |
| Major cities: | Kennebunkport, Biddeford, Saco, Portland, Augusta, Bangor |
| System: | Maine State Highway System |
State Route 9 is a numbered state highway in Maine, running from the New Hampshire border at Berwick in the west to the Canadian border with New Brunswick at Calais in the east. State Route 9 runs a total of 288.0 miles (463 km).
Route Summary
State Route 9 is a meandering highway that works its way from New Hampshire to Canada. It frequently runs concurrent with other highways listed below and also frequently changes direction. For instance, in Kennebunk, State Route 9 travels in a westerly direction even though it is signed as eastbound. State Route 9 runs through most of Maine's major cities including Biddeford, Saco, South Portland, Portland, Augusta, and Bangor. Its leg from Bangor to Calais is often referred to as "The Airline" due to its shorter route than the older U.S. Route 1. (Before the coming of air travel, the term airline often referred to such a shortcut.)
Concurrent routes
- State Route 109, Wells (2 miles)
- U.S. Route 1, Wells (2 miles)
- State Route 208, Biddeford (5 miles)
- U.S. Route 1, Scarborough to South Portland (6 miles)
- State Route 126, Sabattus to Randolph (21 miles)
- State Route 3, Augusta to China (12 miles)
- U.S. Route 202, Augusta to Hampden (60 miles)
- U.S. Route 1A, Hampden to Bangor (5 miles)
- State Route 178, Brewer to Eddington (4 miles)
- U.S. Route 1, Baring to Calais (7 miles)
