US Bridges

SR 24 over Irrigation Canal

Good

Adams County, Washington · 3.1 E Grant CO · Structure no. 000000OM0000000

Built
1967
58 years old
Condition
Good
inspected February 2023
Type
Tee Beam
Concrete
Length
66 ft
2 main spans
Daily traffic
2,223
2023 count
Owner
State
State Highway Agency

About this bridge

SR 24 over Irrigation Canal is a concrete tee beam carrying SR 24 over Irrigation Canal in Adams County, Washington. It was built in 1967, so it is 58 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 2,223 vehicles a day, roughly 19% of them trucks, projected to reach 2,389 by 2039. The structure is 66 ft (20 m) long and 41 ft wide. If it were closed, the detour would be 92 mi (148 km).

Location

Open in Google Maps
CarriesSR 24
CrossesIrrigation Canal
Location3.1 E Grant CO
RouteState Highway 24
CountyAdams County
StateWashington
Coordinates46.738, -119.30717
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating79 US tons
Inventory rating46 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length66 ft (20 m)
Longest span29 ft (8.8 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,223 (2023)
Projected traffic2,389 by 2039
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed92 mi (148 km)
TollOn a free road
National Highway SystemNo

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$936,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 24 over Irrigation Canal built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR 24 over Irrigation 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 February 2023.

How much traffic does SR 24 over Irrigation Canal carry?

About 2,223 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is SR 24 over Irrigation Canal?

The structure is 66 ft (20 m) long with a longest span of 29 ft (8.8 m) and a deck 41 ft wide.

Who owns SR 24 over Irrigation Canal?

It is owned by the State Highway Agency.