10.74 mi
17.28 km
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Route 73
| LENGTH | 10.74 mi / 17.28 km |
| NORTH END | US 1, Rockland |
| SOUTH END | Route 131, St. George |
| PLACES | Rockland, Owls Head, South Thomaston, St. George |
| COUNTIES | Knox |
| CONCURRENCIES | none |
| RIVER CROSSINGS | Weskeag River (South Thomaston) |
| NAMES | South Main
Street (Rockland) Ingraham Drive, Weskeag Road (Owls Head) Elm Street (South Thomaston) Spruce Head Road (South Thomaston to St. George) Seal Harbor Road (St. George) |
| HIGHEST AADT | 11,690 at Pleasant St., Rockland (2006) |
| LOWEST AADT | 1,360 at Village Rd., South Thomaston (2006) |
History
Route 73 was commissioned in 1963.
Guide
Junction List
| Location | mi | Routes / Destination | Other Notes |
| Rockland | 0.0 | US 1 - Main St. / Park St. - Camden, Thomaston |
 |
| Rockland | 0.1 | Pleasant St. |
|
| Rockland | 0.2 | Water St. | |
| Rockland | 0.3 | Holmes St. / Ocean St. | |
| Rockland | 0.5 | Thomaston St. / Crescent St. | |
| Rockland | 0.7 | Mechanic St. | |
| Owls Head | 1.9 | North Shore Dr. | |
| Owls Head | 2.6 | Museum St. - Knox Co. Regional Airport | |
| South Thomaston | 3.3 | Buttermilk Ln. | |
| South Thomaston | 4.0 | Dublin Rd. |
Route 73 turns southwest from Elm St. onto Spruce Head Rd. |
| South Thomaston | 4.2 | Westbrook St. | |
| South Thomaston | 5.4 | Grierson Rd. | |
| South Thomaston | 5.8 | Waterman Beach Rd. | |
| South Thomaston | 7.2 | Island Rd. - Spruce Head | |
| St. George | 7.3 | Village Rd. |
Route 73 turns west |
| St. George | 8.4 | Cline Rd. | |
| St. George | 9.8 | Clark South Island Rd. | |
| St. George | 10.7 | Route 131 - River Rd. - Thomaston, Tenants Harbor |
(c) 1997-2008 J.P. Kirby. All rights reserved. Sign images from the Manual of Traffic Signs by Richard Moeur.
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