Spec Mine Rd. 764 over Branch of Back Creek
Botetourt County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Spec Mine Rd. 764 over Branch of Back Creek in Botetourt County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1987, making it 38 years old at the 2025 inventory.
- It carries about 55 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 141 of the 202 inventoried bridges in Botetourt County rated fair (69.8%); 2 (1.0%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (37.45734, -79.76806)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 28 ft |
| Location | 0.05-Rte763; 0.03-end mt |
| NBI structure number | 000000000003520 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Virginia department of transportation.
Busiest bridges in Botetourt County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| 81 N & Sbl over Buffalo Creek | 1963 | 58,719 | Fair |
| I-81 over Branch of Mill Creek | 1964 | 41,034 | Fair |
| I-81 over Beckner Branch | 1964 | 41,034 | Fair |
| I-81& Route 800 over Mill Creek | 1964 | 41,034 | Fair |
| I-81 over Renick Run | 1959 | 38,069 | Fair |
| Nbl Route 0081 over Rte 648 | 1963 | 29,404 | Fair |
All bridges nearby: Botetourt County, VA bridge conditions · every bridge in Botetourt County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.