US Bridges

US 101 over West Fork Hoquiam River

Good

Grays Harbor County, Washington · 7.0 N JCT SR 109 · Structure no. 0013515A0000000

Built
1990
35 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
138 ft
2 main spans
Daily traffic
2,198
2023 count
Owner
State
State Highway Agency

About this bridge

US 101 over West Fork Hoquiam River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 101 over West Fork Hoquiam River in Grays Harbor County, Washington. It was built in 1990, so it is 35 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 2,198 vehicles a day, roughly 21% of them trucks, projected to reach 2,444 by 2039. The structure is 138 ft (42.1 m) long and 39 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesUS 101
CrossesWest Fork Hoquiam River
Location7.0 N JCT SR 109
RouteU.S. Route 101
Coordinates47.06831, -123.92989
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 2024
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 rating90.9 US tons
Inventory rating54 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length138 ft (42.1 m)
Longest span66 ft (20.1 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,198 (2023)
Projected traffic2,444 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$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 101 over West Fork Hoquiam River built?

It was built in 1990, making it 35 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 2024.

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

About 2,198 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US 101 over West Fork Hoquiam River?

The structure is 138 ft (42.1 m) long with a longest span of 66 ft (20.1 m) and a deck 39 ft wide.

Who owns US 101 over West Fork Hoquiam River?

It is owned by the State Highway Agency.