US Bridges

Quinault S Shore over Willaby Creek

Fair

Grays Harbor County, Washington · 1.4 NE JCT US 101 · Structure no. 082507000000000

Built
1973
52 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
145 ft
3 main spans
Daily traffic
1,328
2020 count
Owner
County
County Highway Agency

About this bridge

Quinault S Shore over Willaby Creek is a concrete continuous box beam or girders - multiple carrying Quinault S Shore over Willaby Creek in Grays Harbor County, Washington. It was built in 1973, so it is 52 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 1,328 vehicles a day, roughly 16% of them trucks, projected to reach 1,341 by 2040. The structure is 145 ft (44.1 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesQuinault S Shore
CrossesWillaby Creek
Location1.4 NE JCT US 101
RouteCounty Highway 93400
Coordinates47.46042, -123.86111
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to 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 rating74 US tons
Inventory rating57.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length145 ft (44.1 m)
Longest span91 ft (27.8 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,328 (2020)
Projected traffic1,341 by 2040
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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$5.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Quinault S Shore over Willaby Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Quinault S Shore over Willaby Creek 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 March 2024.

How much traffic does Quinault S Shore over Willaby Creek carry?

About 1,328 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is Quinault S Shore over Willaby Creek?

The structure is 145 ft (44.1 m) long with a longest span of 91 ft (27.8 m) and a deck 30 ft wide.

Who owns Quinault S Shore over Willaby Creek?

It is owned by the County Highway Agency.