Rock Ridge RD 640 over South Prong
GoodFranklin County, Virginia · 0.80 Rt 751; 0.20 Rt 602 · Structure no. 000000000007865
- Built
- 1987
- 38 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Concrete
- Length
- 31 ft
- 1 main span
- Daily traffic
- 177
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Rock Ridge RD 640 over South Prong is a concrete slab carrying Rock Ridge RD 640 over South Prong in Franklin County, Virginia. It was built in 1987, so it is 38 years old, younger than the Virginia average of 50.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 177 vehicles a day, projected to reach 276 by 2045. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Rock Ridge RD 640 over South Prong built?
It was built in 1987, making it 38 years old in 2025.
What condition is Rock Ridge RD 640 over South Prong in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does Rock Ridge RD 640 over South Prong carry?
About 177 vehicles per day (2017 count).
How long is Rock Ridge RD 640 over South Prong?
The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.
Who owns Rock Ridge RD 640 over South Prong?
It is owned by the State Highway Agency.