Irr Bia Route 405 over Bunches Creek
Swain County, North Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Route 405 over Bunches Creek in Swain County, North Carolina, 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 1996, making it 29 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2024).
- It is one of 33 of the 131 inventoried bridges in Swain County rated good (25.2%); 15 (11.5%) 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 March 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 → (35.53645, -83.2086)
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 | Prestressed concrete multiple box beam |
| Length | about 49 ft |
| Location | 12.1 Km NE of Cherokee Nc |
| NBI structure number | 00000000000S270 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Carolina department of transportation.
Busiest bridges in Swain County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr SR1378 over Oconaluftee River | 1972 | 14,000 | Fair |
| US74 SR1193 over Connelly Creek | 1976 | 13,500 | Fair |
| US19 over Oconaluftee River | 2010 | 13,000 | Good |
| US19 74 NC28 over Little Tennessee River | 1982 | 9,900 | Fair |
| SR1323 over Tuckasegee River | 1969 | 9,800 | Fair |
| US441 over Oconaluftee River Gov.rd | 1987 | 8,900 | Fair |
All bridges nearby: Swain County, NC bridge conditions · every bridge in Swain County · North Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.