US Bridges

US 101 over West Fork Hoquiam River

Good

Grays Harbor County, Washington · 12.0 N JCT SR 109 · Structure no. 0017521B0000000

Built
2008
17 years old
Condition
Good
inspected August 2021
Type
Slab
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
2,119
2023 count
Owner
State
State Highway Agency

About this bridge

US 101 over West Fork Hoquiam River is a prestressed concrete slab carrying US 101 over West Fork Hoquiam River in Grays Harbor County, Washington. It was built in 2008, so it is 17 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 2,119 vehicles a day, roughly 21% of them trucks, projected to reach 2,360 by 2039. The structure is 74 ft (22.6 m) long and 48 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesUS 101
CrossesWest Fork Hoquiam River
Location12.0 N JCT SR 109
RouteU.S. Route 101
Coordinates47.12802, -123.89444
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating52 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length74 ft (22.6 m)
Longest span70 ft (21.3 m)
Deck width48 ft (14.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,119 (2023)
Projected traffic2,360 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 101 over West Fork Hoquiam River built?

It was built in 2008, making it 17 years old in 2025.

What condition is US 101 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 August 2021.

How much traffic does US 101 over West Fork Hoquiam River carry?

About 2,119 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US 101 over West Fork Hoquiam River?

The structure is 74 ft (22.6 m) long with a longest span of 70 ft (21.3 m) and a deck 48 ft wide.

Who owns US 101 over West Fork Hoquiam River?

It is owned by the State Highway Agency.