US Bridges

Summitview Road over Cowiche Creek S. Fork

FairPosted for load

Yakima County, Washington · 00.26 SE Cowiche Ml · Structure no. 080106000000000

Built
1958
67 years old
Condition
Fair
inspected July 2024
Type
Channel Beam
Concrete
Length
32 ft
1 main span
Daily traffic
5,447
2020 count
Owner
County
County Highway Agency

About this bridge

Summitview Road over Cowiche Creek S. Fork is a concrete channel beam carrying Summitview Road over Cowiche Creek S. Fork in Yakima County, Washington. It was built in 1958, so it is 67 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 5,447 vehicles a day, roughly 10% of them trucks, projected to reach 5,991 by 2040. The structure is 32 ft (9.8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSummitview Road
CrossesCowiche Creek S. Fork
Location00.26 SE Cowiche Ml
RouteCounty Highway 20020
CountyYakima County
StateWashington
Coordinates46.6484, -120.70124
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,447 (2020)
Projected traffic5,991 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 of existing bridge without deck rehabilitation
Estimated improvement cost$395,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Summitview Road over Cowiche Creek S. Fork built?

It was built in 1958, making it 67 years old in 2025.

What condition is Summitview Road over Cowiche Creek S. Fork 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 Summitview Road over Cowiche Creek S. Fork carry?

About 5,447 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Summitview Road over Cowiche Creek S. Fork?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns Summitview Road over Cowiche Creek S. Fork?

It is owned by the County Highway Agency.