SR 21 over Dry Coulee
Franklin County, Washington · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 21 over Dry Coulee in Franklin County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1950, making it 75 years old at the 2025 inventory.
- It carries about 165 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 55 of the 133 inventoried bridges in Franklin County rated fair (41.4%); 4 (3.0%) 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 → (46.66836, -118.54708)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 20 ft |
| Location | 1.9 N Jct SR 260 |
| NBI structure number | 0007173B0000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Franklin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-182 over Fcid Canal | 1984 | 60,640 | Good |
| I-182 over Argent Road | 1984 | 30,320 | Good |
| I-182 over Argent Road | 1984 | 30,320 | Fair |
| I-182 over N 4TH Ave | 1964 | 29,585 | Fair |
| I-182 over N 4TH Ave | 1968 | 29,585 | Good |
| I-182 over Np Ry | 1964 | 27,462 | Fair |
All bridges nearby: Franklin County, WA bridge conditions · every bridge in Franklin County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.