I RD SW over Wahluke Branch Canal
GoodGrant County, Washington · I SW .5 N of Wahluke RD · Structure no. 082856000000000
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected January 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 87 ft
- 2 main spans
- Daily traffic
- 106
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
I RD SW over Wahluke Branch Canal is a prestressed concrete slab carrying I RD SW over Wahluke Branch Canal in Grant County, Washington. It was built in 1969, so it is 56 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 106 vehicles a day, roughly 15% of them trucks, projected to reach 126 by 2041. The structure is 87 ft (26.5 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 I RD SW over Wahluke Branch Canal built?
It was built in 1969, making it 56 years old in 2025.
What condition is I RD SW over Wahluke Branch Canal in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.
How much traffic does I RD SW over Wahluke Branch Canal carry?
About 106 vehicles per day (2019 count), of which roughly 15% are trucks.
How long is I RD SW over Wahluke Branch Canal?
The structure is 87 ft (26.5 m) long with a longest span of 42 ft (12.8 m) and a deck 27 ft wide.
Who owns I RD SW over Wahluke Branch Canal?
It is owned by the County Highway Agency.