Lee Highway /11NBL over Thornspring Branch
Pulaski County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Lee Highway /11NBL over Thornspring Branch in Pulaski County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1953, making it 72 years old at the 2025 inventory.
- It carries about 11,777 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 72 of the 105 inventoried bridges in Pulaski County rated fair (68.6%); 4 (3.8%) 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 September 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 → (37.0869, -80.74497)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 37 ft |
| Location | 0.98-Rte643W; 0.78-Rte645 |
| NBI structure number | 000000000014460 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 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 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.