Yellow Sulp RD/643 over Rte 460 By Pass
Montgomery County, Virginia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Yellow Sulp RD/643 over Rte 460 By Pass in Montgomery 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 1969, making it 56 years old at the 2025 inventory.
- It carries about 425 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 104 of the 196 inventoried bridges in Montgomery County rated fair (53.1%); 5 (2.6%) are rated poor.
- 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 → (37.15186, -80.40504)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 172 ft |
| Location | 0.05-ncl Chri; 3.65-rt642 |
| NBI structure number | 000000000012269 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Virginia department of transportation.
Busiest bridges in Montgomery County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| 81 over Br. N Fork Roanoke River | 1968 | 53,173 | Fair |
| RTE 0460/By-Pass over Va Tech Pvt Rd | 1994 | 40,932 | Good |
| 460 Ramp A over 460 Ramps C & D | 2003 | 37,000 | Good |
| Rte. 460/BY-PASS over Smithfield Road | 1994 | 36,455 | Fair |
| Nbl Route 0081 over NS Railway & Rte 641 | 1970 | 27,266 | Fair |
| 81 Nbl over 11/460 Roanoke Rd | 2001 | 27,266 | Good |
All bridges nearby: Montgomery County, VA bridge conditions · every bridge in Montgomery County · Virginia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.