I-81 Sbl over Island Rd & Mumpower Ck
Washington County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-81 Sbl over Island Rd & Mumpower Ck in Washington County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1961 and reconstructed in 2001, making it 64 years old at the 2025 inventory.
- It carries about 22,477 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 149 of the 186 inventoried bridges in Washington County rated fair (80.1%); 4 (2.2%) 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 June 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 → (36.62141, -82.18937)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 251 ft |
| Location | 1.96 R 11 &3.58 Tenn Line |
| NBI structure number | 000000000020022 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 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 Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-81 Nbl & Sbl over NS Railway & Beaver Ck | 1963 | 54,321 | Fair |
| I-81 Sbl & Nbl over Old Airport Road | 1994 | 54,000 | Fair |
| I-81 NB & SB over Creek | 1963 | 51,598 | Fair |
| Route I-81 N&sbl over Town Creek | 1961 | 51,110 | Fair |
| I-81 Nbl & Sbl over Wolf Creek | 1961 | 47,735 | Fair |
| Interstate 81 over Stoffel Creek | 1961 | 47,675 | Fair |
All bridges nearby: Washington County, VA bridge conditions · every bridge in Washington County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.