King Grade over Tucannon River
PoorPosted for loadColumbia County, Washington · 00.20 MI S CR 9233 · Structure no. 080875000000000
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 79 ft
- 2 main spans
- Daily traffic
- 25
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
King Grade over Tucannon River is a wood or timber stringer/multi-beam or girder carrying King Grade over Tucannon River in Columbia County, Washington. It was built in 1974, so it is 51 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 4 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. Its operating status is: posted for other load-capacity restriction.
It carries about 25 vehicles a day, roughly 20% of them trucks, projected to reach 35 by 2041. The structure is 79 ft (24.1 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was King Grade over Tucannon River built?
It was built in 1974, making it 51 years old in 2025.
What condition is King Grade over Tucannon 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 October 2024.
How much traffic does King Grade over Tucannon River carry?
About 25 vehicles per day (2019 count), of which roughly 20% are trucks.
How long is King Grade over Tucannon River?
The structure is 79 ft (24.1 m) long with a longest span of 40 ft (12.1 m) and a deck 16 ft wide.
Who owns King Grade over Tucannon River?
It is owned by the County Highway Agency.