Fs Route No. 311 over S.f. Granite CR
Pend Oreille County, Washington · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fs Route No. 311 over S.f. Granite CR in Pend Oreille County, Washington, 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 1952, making it 73 years old at the 2025 inventory.
- It carries about 50 vehicles a day.
- It is one of 22 of the 71 inventoried bridges in Pend Oreille County rated fair (31.0%); 11 (15.5%) 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 September 2023, 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 → (48.69269, -117.04129)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 34 ft |
| Location | South Fork Granite Creek |
| NBI structure number | 010408000000184 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Pend Oreille County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 41 over Bnrr | 2019 | 5,000 | Good |
| SR 20 over Calispell Creek | 1986 | 2,212 | Good |
| SR 31 over Cedar Creek | 1946 | 1,960 | Fair |
| Fifth Ave (Usk) over Pend Oreille River | 1964 | 1,900 | Poor |
| SR 20 over Davis Creek | 1936 | 1,588 | Fair |
| SR 31 over Pend Oreille River | 1950 | 1,288 | Fair |
All bridges nearby: Pend Oreille County, WA bridge conditions · every bridge in Pend Oreille County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.