ThrnsprgChrchRd639 over Thornspring Branch
Pulaski County, Virginia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- ThrnsprgChrchRd639 over Thornspring Branch in Pulaski County, Virginia, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1997, making it 28 years old at the 2025 inventory.
- It carries about 1,198 vehicles a day (traffic count year 2017).
- Its listed owner is the state highway agency.
- It is one of 29 of the 105 inventoried bridges in Pulaski County rated good (27.6%); 4 (3.8%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.10443, -80.75893)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 29 ft |
| Location | 0.10-Rte643; 1.30-Rte636 |
| NBI structure number | 000000000025428 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Virginia department of transportation.
Busiest bridges in Pulaski County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-81 over Branch of Slone Branch | 1965 | 45,109 | Fair |
| I-81; FO47; FO64 over Sloan Branch | 1960 | 43,842 | Fair |
| Nbl Route 0081 over Rte 100 | 1965 | 23,385 | Fair |
| Nbl Route 0081 over RT99/COUNT Pulaski Dr. | 1960 | 23,053 | Fair |
| Nbl Route 0081 over Peak Creek | 1960 | 23,053 | Fair |
| Nbl Route 0081 over New River Trail St. Park | 1960 | 23,053 | Fair |
All bridges nearby: Pulaski County, VA bridge conditions · every bridge in Pulaski County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.