Healy Spur Road over Nenana River at Healy
Denali Borough, Alaska · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Healy Spur Road over Nenana River at Healy in Denali Borough, Alaska, 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 1971, making it 54 years old at the 2025 inventory.
- It carries about 720 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 21 of the 27 inventoried bridges in Denali Borough rated fair (77.8%); 1 (3.7%) 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 July 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 → (63.85421, -148.95577)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 498 ft |
| Location | Mile Point 3.2 |
| NBI structure number | 0857 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 7: scour countermeasures installed |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Alaska department of transportation.
Busiest bridges in Denali Borough
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Parks Highway over Kingfisher Creek | 1971 | 2,670 | Fair |
| Parks Highway over Hornet Creek | 1971 | 2,670 | Fair |
| Parks Highway over Iceworm Gulch | 1971 | 2,670 | Fair |
| Parks Highway over Nenana River Park Sta | 1970 | 2,340 | Fair |
| Parks Highway over Nenana River Park Bnd | 1973 | 1,680 | Fair |
| Parks Highway over Riley Creek | 2015 | 1,680 | Good |
All bridges nearby: Denali Borough, AK bridge conditions · every bridge in Denali Borough · Alaska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.