US Bridges

US 101 over West Fork Hoquiam River

Good

Grays Harbor County, Washington · 11.6 N JCT SR 109 · Structure no. 0012862A0000000

Built
1985
40 years old
Condition
Good
inspected July 2021
Type
Slab
Prestressed Concrete
Length
52 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 1985, so it is 40 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 52 ft (15.8 m) long and 40 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesUS 101
CrossesWest Fork Hoquiam River
Location11.6 N JCT SR 109
RouteU.S. Route 101
Coordinates47.12328, -123.89403
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 inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating80 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length52 ft (15.8 m)
Longest span52 ft (15.8 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$832,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 101 over West Fork Hoquiam River built?

It was built in 1985, making it 40 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 July 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 52 ft (15.8 m) long with a longest span of 52 ft (15.8 m) and a deck 40 ft wide.

Who owns US 101 over West Fork Hoquiam River?

It is owned by the State Highway Agency.