US Bridges

Urquhart RD over Weber Coulee

FairPosted for load

Adams County, Washington · 00.75 MI E Kulm RD · Structure no. 080700000000000

Built
1917
108 years old
Condition
Fair
inspected November 2023
Type
Other
Concrete
Length
66 ft
1 main span
Daily traffic
57
2020 count
Owner
County
County Highway Agency

About this bridge

Urquhart RD over Weber Coulee is a concrete other carrying Urquhart RD over Weber Coulee in Adams County, Washington. It was built in 1917, so it is 108 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for other load-capacity restriction.

It carries about 57 vehicles a day, roughly 46% of them trucks, projected to reach 70 by 2041. The structure is 66 ft (20.2 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesUrquhart RD
CrossesWeber Coulee
Location00.75 MI E Kulm RD
RouteCounty Highway 64371
CountyAdams County
StateWashington
Coordinates47.07151, -118.83965
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeOther
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length66 ft (20.2 m)
Longest span66 ft (20.2 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57 (2020)
Projected traffic70 by 2041
Trucks46%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Urquhart RD over Weber Coulee built?

It was built in 1917, making it 108 years old in 2025.

What condition is Urquhart RD over Weber Coulee 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 November 2023.

How much traffic does Urquhart RD over Weber Coulee carry?

About 57 vehicles per day (2020 count), of which roughly 46% are trucks.

How long is Urquhart RD over Weber Coulee?

The structure is 66 ft (20.2 m) long with a longest span of 66 ft (20.2 m) and a deck 23 ft wide.

Who owns Urquhart RD over Weber Coulee?

It is owned by the County Highway Agency.