US Bridges

O RD SW over West Canal

Fair

Grant County, Washington · O SW 1.2 N of 11 · Structure no. 082839000000000

Built
1958
67 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
42 ft
2 main spans
Daily traffic
257
2019 count
Owner
County
County Highway Agency

About this bridge

O RD SW over West Canal is a wood or timber stringer/multi-beam or girder carrying O RD SW over West Canal in Grant County, Washington. It was built in 1958, so it is 67 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 257 vehicles a day, roughly 22% of them trucks, projected to reach 126 by 2041. The structure is 42 ft (12.8 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesO RD SW
CrossesWest Canal
LocationO SW 1.2 N of 11
RouteCounty Highway 11910
CountyGrant County
StateWashington
Coordinates46.94563, -119.81337
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length42 ft (12.8 m)
Longest span21 ft (6.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic257 (2019)
Projected traffic126 by 2041
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was O RD SW over West Canal built?

It was built in 1958, making it 67 years old in 2025.

What condition is O RD SW over West Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does O RD SW over West Canal carry?

About 257 vehicles per day (2019 count), of which roughly 22% are trucks.

How long is O RD SW over West Canal?

The structure is 42 ft (12.8 m) long with a longest span of 21 ft (6.4 m) and a deck 25 ft wide.

Who owns O RD SW over West Canal?

It is owned by the County Highway Agency.