US Bridges

Maintenance Road over West Canal

Good

Grant County, Washington · Dry Coulee Siphon 1 Outle · Structure no. 11WC0185

Built
1946
79 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
25 ft
1 main span
Daily traffic
5
2022 count
Owner
Federal
Bureau of Reclamation

About this bridge

Maintenance Road over West Canal is a concrete continuous culvert carrying Maintenance Road over West Canal in Grant County, Washington. It was built in 1946, so it is 79 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5 vehicles a day, projected to reach 5 by 2042. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMaintenance Road
CrossesWest Canal
LocationDry Coulee Siphon 1 Outle
Coordinates47.41716, -119.38671
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Reclamation
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Maintenance Road over West Canal built?

It was built in 1946, making it 79 years old in 2025.

What condition is Maintenance Road 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 November 2024.

How much traffic does Maintenance Road over West Canal carry?

About 5 vehicles per day (2022 count).

How long is Maintenance Road over West Canal?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m).

Who owns Maintenance Road over West Canal?

It is owned by the Bureau of Reclamation and maintained by the Other Local Agency.