US Highway 1a over Mill River
Fair Condition84 years old3,461 vehicles/day
Location
| State | Maine |
| County | Washington |
| Location | Milbridge/harrngton T.l. |
| Carries | US Highway 1a |
| Crosses | Mill River |
| Coordinates | 44.59171, -67.85644 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 66.9 ft (20.4 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 36.7 ft (11.2 m) |
| Deck Area | 228.5 sq m |
| Main Spans | 1 |
| Year Built | 1942 (reconstructed 1997) |
Traffic
| Avg Daily Traffic | 3,461 (2016) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 3658 |