US 12 over Wynoochee River
PoorGrays Harbor County, Washington · 8.3 E JCT US 101 · Structure no. 0001949A0000000
- Built
- 1935
- 90 years old
- Condition
- Poor
- inspected June 2023
- Type
- Truss - Thru
- Steel
- Length
- 286 ft
- 1 main span
- Daily traffic
- 21,466
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Wynoochee River is a steel truss - thru carrying US 12 over Wynoochee River in Grays Harbor County, Washington. It was built in 1935, so it is 90 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 21,466 vehicles a day, roughly 6% of them trucks, projected to reach 23,274 by 2039. The structure is 286 ft (87.2 m) long and 46 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Wynoochee River built?
It was built in 1935, making it 90 years old in 2025.
What condition is US 12 over Wynoochee River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.
How much traffic does US 12 over Wynoochee River carry?
About 21,466 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 12 over Wynoochee River?
The structure is 286 ft (87.2 m) long with a longest span of 200 ft (61 m) and a deck 46 ft wide.
Who owns US 12 over Wynoochee River?
It is owned by the State Highway Agency.