Irr Bia Rte 8PGH over Big Creek
Kenai Peninsula Borough, Alaska · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte 8PGH over Big Creek in Kenai Peninsula Borough, Alaska, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1996, making it 29 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2021).
- It is one of 50 of the 102 inventoried bridges in Kenai Peninsula Borough rated fair (49.0%); 13 (12.7%) 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 → (59.30064, -151.72422)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 80 ft |
| Location | 6.5 Mi SE of Port Graham |
| NBI structure number | 000000008PGH-19 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Alaska department of transportation.
Busiest bridges in Kenai Peninsula Borough
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sterling Highway over Kenai River (soldotna) | 2007 | 15,100 | Fair |
| Kenai Riv Crossing over Kenai River (kenai) | 1974 | 10,000 | Fair |
| Seward Highway over Resurrection River No 1 | 2003 | 6,840 | Good |
| Seward Highway over Resurrection River No 2 | 2003 | 6,840 | Good |
| Seward Highway over Resurrection River No 3 | 2003 | 6,840 | Good |
| Sterling Highway over Moose River | 1993 | 6,360 | Good |
All bridges nearby: Kenai Peninsula Borough, AK bridge conditions · every bridge in Kenai Peninsula Borough · Alaska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.