Irr:bethel Highway over Browns Slough
Bethel Census Area, Alaska · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr:bethel Highway over Browns Slough in Bethel Census Area, Alaska, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, 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 2,380 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 7 of the 13 inventoried bridges in Bethel Census Area rated good (53.8%); 1 (7.7%) 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 → (60.79345, -161.74561)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 103 ft |
| Location | Mile Point 0.0 |
| NBI structure number | 0265 |
| 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 Bethel Census Area
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr:ridgecrest Dr over Browns Slough | 1971 | 2,380 | Fair |
| Irr Bia Rte 6068 over Swampy Slough | 2014 | 400 | Good |
| Irr Bia Rte 1029 over Unnamed Tidal Slough | 2002 | 300 | Fair |
| Irr Bia Rte 6014 over Very Small Slough | 2014 | 200 | Good |
| Irr Bia Rte 6023 over Unnamed Tidal Slough | 2005 | 200 | Good |
| Irr Bia Rte 6040 over Unnamed Tidal Slough | 2005 | 200 | Good |
All bridges nearby: Bethel Census Area, AK bridge conditions · every bridge in Bethel Census Area · Alaska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.