US Bridges

Hoquiam Wishkah RD over Wishkah River

Fair

Grays Harbor County, Washington · 11.7 N Aberdeen · Structure no. 083045000000000

Built
1968
57 years old
Condition
Fair
inspected January 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
188 ft
3 main spans
Daily traffic
1,379
2022 count
Owner
County
County Highway Agency

About this bridge

Hoquiam Wishkah RD over Wishkah River is a concrete continuous box beam or girders - multiple carrying Hoquiam Wishkah RD over Wishkah River in Grays Harbor County, Washington. It was built in 1968, so it is 57 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.

It carries about 1,379 vehicles a day, roughly 15% of them trucks, projected to reach 1,682 by 2042. The structure is 188 ft (57.3 m) long and 28 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

Location

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CarriesHoquiam Wishkah RD
CrossesWishkah River
Location11.7 N Aberdeen
RouteCounty Highway 94312
CountyGrays Harbor County
StateWashington
Coordinates47.10944, -123.78944
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
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 rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length188 ft (57.3 m)
Longest span85 ft (25.9 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,379 (2022)
Projected traffic1,682 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 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 Hoquiam Wishkah RD over Wishkah River built?

It was built in 1968, making it 57 years old in 2025.

What condition is Hoquiam Wishkah RD over Wishkah 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 Hoquiam Wishkah RD over Wishkah River carry?

About 1,379 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Hoquiam Wishkah RD over Wishkah River?

The structure is 188 ft (57.3 m) long with a longest span of 85 ft (25.9 m) and a deck 28 ft wide.

Who owns Hoquiam Wishkah RD over Wishkah River?

It is owned by the County Highway Agency.