US Bridges

Dekay Road over West Fork Hoquiam River

Good

Grays Harbor County, Washington · 0.0 W JCT US 101 · Structure no. 080859000000000

Built
1976
49 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
342
2023 count
Owner
County
County Highway Agency

About this bridge

Dekay Road over West Fork Hoquiam River is a concrete continuous slab carrying Dekay Road over West Fork Hoquiam River in Grays Harbor County, Washington. It was built in 1976, so it is 49 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 342 vehicles a day, roughly 32% of them trucks, projected to reach 362 by 2039. The structure is 91 ft (27.7 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesDekay Road
CrossesWest Fork Hoquiam River
Location0.0 W JCT US 101
RouteCounty Highway 43920
Coordinates47.05708, -123.92786
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length91 ft (27.7 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic342 (2023)
Projected traffic362 by 2039
Trucks32%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$3.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dekay Road over West Fork Hoquiam River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Dekay Road over West Fork Hoquiam River 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 April 2024.

How much traffic does Dekay Road over West Fork Hoquiam River carry?

About 342 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is Dekay Road over West Fork Hoquiam River?

The structure is 91 ft (27.7 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Dekay Road over West Fork Hoquiam River?

It is owned by the County Highway Agency.