Bridge conditions in Frederick County, Virginia
168 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 168 bridges in Frederick County: 60 rated good, 105 fair, and 3 poor.
- 3 of the 168 bridges in Frederick County, Virginia, are rated in poor condition (1.8%) in the 2025 National Bridge Inventory, as of .
- 60 bridges (35.7%) are rated good and 105 (62.5%) fair.
- The median Frederick County bridge was built in 1973.
- The busiest poor-rated bridge is Back Mountain Rd over Gap Run (built 1981), carrying about 5,164 vehicles a day.
Good 35.7% · Fair 62.5% · Poor 1.8% of 168 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Back Mountain Rd over Gap Run | 1981 | 5,164 | Poor |
| Valley Mill Rd over Abrams Creek | 1932 | 4,846 | Poor |
| Siler Rd over Brush Creek | 1932 | 333 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-81 over Stephens Run | 1965 | 55,640 | Good |
| I-81 over Thomas Run | 1965 | 53,468 | Good |
| I-81 Nbl over Route 11 | 1964 | 35,288 | Fair |
| I-81 Nbl over Abrams Creek & Pvt Rd | 1964 | 35,134 | Fair |
| I-81 Sbl over Abrams Creek & Pvt Rd | 1964 | 34,099 | Fair |
| I-81 Nbl over CSX Transportation | 1964 | 33,000 | Fair |
| I-81 Nbl over Red Bud Run | 1965 | 32,420 | Fair |
| I-81 Nbl over Opequon Creek | 1963 | 30,120 | Fair |
| I-81 Sbl over CSX Transportation | 1964 | 30,000 | Fair |
| I-81 Sbl over Route 11 | 1964 | 29,488 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Virginia: Virginia bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.