I-82 over SR 821 Whipple Wasteway
Kittitas County, Washington · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-82 over SR 821 Whipple Wasteway in Kittitas County, Washington, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 9,791 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- 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 → (46.92644, -120.49816)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 4 | Poor condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 356 ft |
| Location | 3.2 E Jct I-90 |
| NBI structure number | 0008672C0000000 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
All bridges nearby: Kittitas County, WA bridge conditions · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.