US Bridges

SR 281 over West Canal

Fair

Grant County, Washington · 0.6 N JCT I-90 · Structure no. 0007386E0000000

Built
1964
61 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
106 ft
3 main spans
Daily traffic
5,926
2023 count
Owner
State
State Highway Agency

About this bridge

SR 281 over West Canal is a concrete continuous slab carrying SR 281 over West Canal in Grant County, Washington. It was built in 1964, so it is 61 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 5,926 vehicles a day, roughly 17% of them trucks, projected to reach 6,392 by 2039. The structure is 106 ft (32.3 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSR 281
CrossesWest Canal
Location0.6 N JCT I-90
RouteState Highway 281
CountyGrant County
StateWashington
Coordinates47.09125, -119.85844
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
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 rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span33 ft (10.1 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,926 (2023)
Projected traffic6,392 by 2039
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 281 over West Canal built?

It was built in 1964, making it 61 years old in 2025.

What condition is SR 281 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 2024.

How much traffic does SR 281 over West Canal carry?

About 5,926 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is SR 281 over West Canal?

The structure is 106 ft (32.3 m) long with a longest span of 33 ft (10.1 m) and a deck 42 ft wide.

Who owns SR 281 over West Canal?

It is owned by the State Highway Agency.