Dam #4 Road over C&o Canal
Good Condition55 years old212 vehicles/day
Location
| State | Maryland |
| County | Washington |
| Location | 0.9 Miles From Dam #4 On |
| Carries | Dam #4 Road |
| Crosses | C&o Canal |
| Coordinates | 39.49978, -77.84344 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 53.8 ft (16.4 m) |
| Max Span | 52.5 ft (16 m) |
| Deck Width | 22.6 ft (6.9 m) |
| Deck Area | 113.2 sq m |
| Main Spans | 1 |
| Year Built | 1971 (reconstructed 2014) |
Traffic
| Avg Daily Traffic | 212 (2007) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | National Park Service |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 3100008P0000000 |