Route 81 over Nbl&sbl over Stream
Smyth County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Route 81 over Nbl&sbl over Stream in Smyth County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1964, making it 61 years old at the 2025 inventory.
- It carries about 27,803 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 151 of the 189 inventoried bridges in Smyth County rated fair (79.9%); 7 (3.7%) are rated poor.
- 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 → (36.88805, -81.37215)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 28 ft |
| Location | 6.97 to R11; .08 to R683 |
| NBI structure number | 000000000017495 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Virginia department of transportation.
Busiest bridges in Smyth County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| N&sbl Route 0081 over Laurel Spring Branch | 1963 | 33,381 | Fair |
| Interstate 81 over Nbl&sbl over Stream | 1963 | 31,442 | Fair |
| I-81 Nbl & Sbl over Rte 11 Nsrr Mfh River | 2021 | 31,084 | Good |
| Interstate 81 over Staley Creek | 1962 | 30,390 | Fair |
| Interstate 81 over N&sbl O Hutton Branch | 1963 | 29,356 | Fair |
| Interstate 81 Sbl over Rte. 691 (johnston Road) | 1963 | 18,000 | Fair |
All bridges nearby: Smyth County, VA bridge conditions · every bridge in Smyth County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.