Quartz Creek Road over Quartz Creek
Kenai Peninsula Borough, Alaska · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Quartz Creek Road over Quartz Creek in Kenai Peninsula Borough, Alaska, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 9 (excellent condition) on the 0-9 scale.
- It was built in 2024, making it 1 years old at the 2025 inventory.
- It carries about 210 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 39 of the 102 inventoried bridges in Kenai Peninsula Borough rated good (38.2%); 13 (12.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated poor in the 2024 inventory and is now good (deck 5 to 9, superstructure 4 to 9, substructure 5 to 9).
- Status change: its 2024 load posting has been removed.
- 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 → (60.48049, -149.72083)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 9 | Excellent condition |
| Superstructure | 4 | 9 | Excellent condition |
| Substructure | 5 | 9 | Excellent condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 202 ft |
| Location | Mile Point 0.7 |
| NBI structure number | 1020 |
| 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 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.