Interstate 79 NB over Wv 310
Marion County, West Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Interstate 79 NB over Wv 310 in Marion County, West 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 1966, making it 59 years old at the 2025 inventory.
- It carries about 18,450 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 59 of the 193 inventoried bridges in Marion County rated fair (30.6%); 41 (21.2%) 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 July 2023, 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 → (39.47209, -80.12069)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 157 ft |
| Location | 1.70 Mi North Co Rt 64/2 |
| NBI structure number | 00000000025A142 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the West Virginia department of transportation.
Busiest bridges in Marion County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 79 over Mar. Co. 29/1 | 1967 | 49,500 | Fair |
| Interstate 79 over Mar. Co. Rt. 64 | 2008 | 37,100 | Good |
| Interstate 79 over Prickett Creek | 1968 | 36,900 | Good |
| Interstate 79 SB over Marion County Rt. 64/2 | 1965 | 33,700 | Fair |
| Interstate 79 SB over Tygart Valley Riv CR 60 | 1960 | 24,750 | Fair |
| Interstate 79 over Tygart Valley Riv CR 60 | 2023 | 24,750 | Good |
All bridges nearby: Marion County, WV bridge conditions · every bridge in Marion County · West Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.