3.50 mi
5.63 km
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U.S. Route 1 Business
| LENGTH | 3.50 mi / 5.63 km |
| WEST END | US 1, Newcastle |
| EAST END | US 1, Damariscotta |
| PLACES | Newcastle, Damariscotta |
| COUNTIES | Lincoln |
| RIVER CROSSINGS | Damariscotta River, Newcastle to Damariscotta |
| NAMES | Fore River Parkway, Commercial Street, Franklin Arterial |
| HIGHEST AADT | 12,420 at Water St., Damariscotta (2005) |
| LOWEST AADT | 4,980 at eastern terminus (2005) |
History
Business 1 is a former alignment of US 1 through the twin towns of Damariscotta and Newcastle, that came into being with the construction of a bypass in the 1960s.
Guide
US 1 Business is occasionally signed as 1B.
Junction List
| Location | mi | Routes / Destination | Other Notes |
| Newcastle | 0.0 | US 1 south - Bath, Brunswick | northbound entrance and southbound exit only |
| Newcastle | 0.3 | River Rd. |
 US
1B merges onto River Rd. |
| Newcastle | 0.5 |
Route 215 - Mills Rd. - Damariscotta Mills Academy Hill Rd. |
US 1B turns right onto Main St. |
| Damariscotta | 0.8 | Elm St. | |
| Damariscotta | 0.9 | Water St. | |
| Damariscotta | 0.9 | Route 129 - Bristol Rd. - Bristol | |
| Damariscotta | 1.0 | Church St. | |
| Damariscotta | 1.5 | School St. | |
| Damariscotta | 2.0 | Church St. / Biscay Rd. | |
| Damariscotta | 2.5 | Back Meadow Rd. | |
| Damariscotta | 2.8 | Belvedere Rd. | |
| Damariscotta | 3.5 | US 1 - Brunswick, Rockland |
(c) 1997-2007 J.P. Kirby. All rights reserved. Sign images from the Manual of Traffic Signs by Richard Moeur.
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