US Bridges

Cowiche Canyon Ln. over Cowiche Creek

Good

Yakima County, Washington · 00.03 N Cowiche Can · Structure no. 081964000000000

Built
1977
48 years old
Condition
Good
inspected March 2023
Type
Channel Beam
Concrete
Length
48 ft
1 main span
Daily traffic
75
2023 count
Owner
County
County Highway Agency

About this bridge

Cowiche Canyon Ln. over Cowiche Creek is a concrete channel beam carrying Cowiche Canyon Ln. over Cowiche Creek in Yakima County, Washington. It was built in 1977, so it is 48 years old, younger 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 75 vehicles a day, roughly 5% of them trucks, projected to reach 125 by 2043. The structure is 48 ft (14.6 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCowiche Canyon Ln.
CrossesCowiche Creek
Location00.03 N Cowiche Can
RouteCounty Highway 23990
CountyYakima County
StateWashington
Coordinates46.61891, -120.5938
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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating25.7 US tons
Inventory rating19.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span47 ft (14.3 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic125 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$2.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cowiche Canyon Ln. over Cowiche Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Cowiche Canyon Ln. over Cowiche Creek 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 March 2023.

How much traffic does Cowiche Canyon Ln. over Cowiche Creek carry?

About 75 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Cowiche Canyon Ln. over Cowiche Creek?

The structure is 48 ft (14.6 m) long with a longest span of 47 ft (14.3 m) and a deck 28 ft wide.

Who owns Cowiche Canyon Ln. over Cowiche Creek?

It is owned by the County Highway Agency.