Murphy Dam Road over Dam Spillway
Poor Condition88 years old96 vehicles/day
Location
| State | New Hampshire |
| County | Coos |
| Location | 0.2 Mi From US RT 3 |
| Carries | Murphy Dam Road |
| Crosses | Dam Spillway |
| Coordinates | 45.04901, -71.38264 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 38.1 ft (11.6 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 20.3 ft (6.2 m) |
| Deck Area | 71.9 sq m |
| Main Spans | 1 |
| Year Built | 1938 |
Traffic
| Avg Daily Traffic | 96 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 8 months |
| Owner | Other State Agencies |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 021000990003400 |