Spring Valley Rd. over Knob Fork Creek
Grayson County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Spring Valley Rd. over Knob Fork Creek in Grayson County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1978, making it 47 years old at the 2025 inventory.
- It carries about 314 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 113 of the 146 inventoried bridges in Grayson County rated fair (77.4%); 10 (6.8%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, 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 → (36.72637, -81.06796)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 41 ft |
| Location | .3 to R777 & .85 to R651 |
| NBI structure number | 000000000008947 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Virginia department of transportation.
Busiest bridges in Grayson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Grayson Parkway over Johns Creek | 1977 | 8,574 | Fair |
| Grayson Pkwy over Meadow Creek | 1971 | 8,574 | Fair |
| Grayson Pkwy over Greasy Creek | 1999 | 8,574 | Fair |
| Grayson Pkwy over Greasy Creek | 2000 | 8,574 | Fair |
| Grayson Hwy. over Johns Creek | 2000 | 8,574 | Fair |
| Grayson parkway over Johns Creek | 1999 | 8,574 | Fair |
All bridges nearby: Grayson County, VA bridge conditions · every bridge in Grayson County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.