Route 646 SBL over I-64
York County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Route 646 SBL over I-64 in York County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1979, making it 46 years old at the 2025 inventory.
- It carries about 13,214 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 84 of the 109 inventoried bridges in York County rated fair (77.1%); 0 (0.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: substructure 5 to 6.
- 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 → (37.35251, -76.73195)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 354 ft |
| Location | 1.52 Mi To Route 60 |
| NBI structure number | 000000000019879 |
| 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) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Virginia department of transportation.
Busiest bridges in York County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-64 over Route 17 | 1996 | 155,994 | Fair |
| Is 64 over Mercury Blvd | 2005 | 152,406 | Good |
| I-64 Ebl & Wbl over Blows Mill Run | 1965 | 83,823 | Fair |
| I-64 Ebl & Wbl over Johns Creek | 1985 | 83,098 | Fair |
| I-664 over West Queen Street | 1982 | 81,526 | Fair |
| I-64 over Route 60 & 143 | 1987 | 77,654 | Fair |
All bridges nearby: York County, VA bridge conditions · every bridge in York County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.