US Bridges

Weikel Road over Cowiche Creek

FairPosted for load

Yakima County, Washington · 00.10 N Zimmerman · Structure no. 079837000000000

Built
1950
75 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
393
2020 count
Owner
County
County Highway Agency

About this bridge

Weikel Road over Cowiche Creek is a concrete continuous slab carrying Weikel Road over Cowiche Creek in Yakima County, Washington. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 393 vehicles a day, roughly 10% of them trucks, projected to reach 432 by 2040. The structure is 44 ft (13.4 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesWeikel Road
CrossesCowiche Creek
Location00.10 N Zimmerman
RouteCounty Highway 20250
CountyYakima County
StateWashington
Coordinates46.63833, -120.66667
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.3 US tons
Inventory rating11.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length44 ft (13.4 m)
Longest span20 ft (6.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic393 (2020)
Projected traffic432 by 2040
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Weikel Road over Cowiche Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Weikel Road over Cowiche Creek 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 July 2024.

How much traffic does Weikel Road over Cowiche Creek carry?

About 393 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Weikel Road over Cowiche Creek?

The structure is 44 ft (13.4 m) long with a longest span of 20 ft (6.1 m) and a deck 24 ft wide.

Who owns Weikel Road over Cowiche Creek?

It is owned by the County Highway Agency.