SR 31 over Sullivan Creek
Pend Oreille County, Washington · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 31 over Sullivan Creek in Pend Oreille County, Washington, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1927, making it 98 years old at the 2025 inventory.
- It carries about 949 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 11 of the 71 inventoried bridges in Pend Oreille County rated poor (15.5%); 11 (15.5%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (48.86031, -117.36362)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 4 | Poor condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 180 ft |
| Location | 14.8 N Jct SR 20 |
| NBI structure number | 0001259A0000000 |
| Condition class | Poor |
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.