Irr:suravak Road over Wood River
Dillingham Census Area, Alaska · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr:suravak Road over Wood River in Dillingham Census Area, Alaska, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2015, making it 10 years old at the 2025 inventory.
- It carries about 340 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 1 of the 3 inventoried bridges in Dillingham Census Area rated good (33.3%); 2 (66.7%) 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 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 → (59.27416, -158.59076)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 439 ft |
| Location | Aleknagik |
| NBI structure number | 1902 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 Alaska department of transportation.
Busiest bridges in Dillingham Census Area
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr:airport Road over Unnamed Creek Koliganek | 1980 | 50 | Poor |
| Irr:kolgnk Dump Rd over Unnamed Creek | 1980 | 10 | Poor |
All bridges nearby: Dillingham Census Area, AK bridge conditions · every bridge in Dillingham Census Area · Alaska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.