US 12 / Heron St over Wishkah River
Grays Harbor County, Washington · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 12 / Heron St over Wishkah River in Grays Harbor County, Washington, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1949, making it 76 years old at the 2025 inventory.
- It carries about 14,965 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 → (46.97597, -123.81206)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 3 | Serious condition |
| Superstructure | 4 | Poor condition |
| Substructure | 3 | Serious condition |
Bridge details
| Structure | Continuous steel movable swing |
| Length | about 234 ft |
| Location | 0.1 E Jct US 101 |
| NBI structure number | 000000LM0000000 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
All bridges nearby: Grays Harbor County, WA bridge conditions · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.