US Bridges

C RD SE over West Canal

Good

Grant County, Washington · C SE .7 N of 12 · Structure no. 084474000000000

Built
1964
61 years old, rebuilt 1974
Condition
Good
inspected December 2024
Type
Channel Beam
Prestressed Concrete
Length
62 ft
2 main spans
Daily traffic
139
2021 count
Owner
County
County Highway Agency

About this bridge

C RD SE over West Canal is a prestressed concrete channel beam carrying C RD SE over West Canal in Grant County, Washington. It was built in 1964 and reconstructed in 1974, 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 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 139 vehicles a day, roughly 29% of them trucks, projected to reach 275 by 2043. The structure is 62 ft (18.9 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesC RD SE
CrossesWest Canal
LocationC SE .7 N of 12
RouteCounty Highway 20650
Coordinates46.92301, -119.43033
Functional classRural Local

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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadH 15
Structure length62 ft (18.9 m)
Longest span31 ft (9.4 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic139 (2021)
Projected traffic275 by 2043
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$854,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C RD SE over West Canal built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1974.

What condition is C RD SE over West 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 December 2024.

How much traffic does C RD SE over West Canal carry?

About 139 vehicles per day (2021 count), of which roughly 29% are trucks.

How long is C RD SE over West Canal?

The structure is 62 ft (18.9 m) long with a longest span of 31 ft (9.4 m) and a deck 29 ft wide.

Who owns C RD SE over West Canal?

It is owned by the County Highway Agency.