US Bridges

Wynooche Wishkah over Wynoochee River

Fair

Grays Harbor County, Washington · 0.4 W JCT Wyn Val · Structure no. 080266000000000

Built
1982
43 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
330 ft
3 main spans
Daily traffic
728
2023 count
Owner
County
County Highway Agency

About this bridge

Wynooche Wishkah over Wynoochee River is a prestressed concrete stringer/multi-beam or girder carrying Wynooche Wishkah over Wynoochee River in Grays Harbor County, Washington. It was built in 1982, so it is 43 years old, younger 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.

It carries about 728 vehicles a day, roughly 15% of them trucks, projected to reach 888 by 2043. The structure is 330 ft (100.6 m) long and 31 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

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CarriesWynooche Wishkah
CrossesWynoochee River
Location0.4 W JCT Wyn Val
RouteCounty Highway 51800
CountyGrays Harbor County
StateWashington
Coordinates47.07852, -123.69989
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length330 ft (100.6 m)
Longest span110 ft (33.5 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic728 (2023)
Projected traffic888 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wynooche Wishkah over Wynoochee River built?

It was built in 1982, making it 43 years old in 2025.

What condition is Wynooche Wishkah over Wynoochee River 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 January 2023.

How much traffic does Wynooche Wishkah over Wynoochee River carry?

About 728 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Wynooche Wishkah over Wynoochee River?

The structure is 330 ft (100.6 m) long with a longest span of 110 ft (33.5 m) and a deck 31 ft wide.

Who owns Wynooche Wishkah over Wynoochee River?

It is owned by the County Highway Agency.