Mill Mountain Spur over Yellow Mountain Road
Roanoke County, Virginia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mill Mountain Spur over Yellow Mountain Road in Roanoke County, Virginia, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1966, making it 59 years old at the 2025 inventory.
- It carries about 120 vehicles a day (traffic count year 2012).
- It is one of 82 of the 207 inventoried bridges in Roanoke County rated good (39.6%); 1 (0.5%) 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 good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.23486, -79.94372)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 89 ft |
| Location | 1 Mile to Parkway at Mp 1 |
| NBI structure number | 5140036P0000000 |
| Condition class | Good |
| 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 Roanoke County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Route 0581 over Walker Avenue | 1966 | 73,663 | Fair |
| Route 581 over Routes 11; 116 & 221 | 1968 | 73,663 | Fair |
| Routes 581 & 220 over RTEs 11; 116 & 460 | 1965 | 73,429 | Fair |
| Route 0581 over Tazewell Avenue | 1968 | 67,101 | Fair |
| Route 0581 over Kimball Avenue | 1968 | 67,101 | Fair |
| Roy Webber EXP/220 over Wonju Steet | 1977 | 62,286 | Fair |
All bridges nearby: Roanoke County, VA bridge conditions · every bridge in Roanoke County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.