Route I-81 over Rock Branch
Fair Condition62 years old56,324 vehicles/day
Location
| State | Virginia |
| County | Roanoke |
| Location | 4.22-mont Co; 2.61-rte112 |
| Carries | Route I-81 |
| Crosses | Rock Branch |
| Coordinates | 37.27452, -80.13967 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 38.1 ft (11.6 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 165.9 sq m |
| Main Spans | 3 |
| Year Built | 1964 |
Traffic
| Avg Daily Traffic | 56,324 (2022) |
| Truck Traffic | 1% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000014904 |