US Bridges

Stillson Road over West Fork Wildcat Creek

Poor

Grays Harbor County, Washington · 0.5 N JCT CR 7974 · Structure no. 080891000000000

Built
1973
52 years old
Condition
Poor
inspected March 2024
Type
Slab
Prestressed Concrete
Length
69 ft
3 main spans
Daily traffic
90
2023 count
Owner
County
County Highway Agency

About this bridge

Stillson Road over West Fork Wildcat Creek is a prestressed concrete slab carrying Stillson Road over West Fork Wildcat 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 90 vehicles a day, roughly 5% of them trucks, projected to reach 120 by 2040. The structure is 69 ft (21.1 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesStillson Road
CrossesWest Fork Wildcat Creek
Location0.5 N JCT CR 7974
RouteCounty Highway 78730
Coordinates47.05806, -123.30806
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating43.5 US tons
Inventory rating23.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length69 ft (21.1 m)
Longest span31 ft (9.5 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2023)
Projected traffic120 by 2040
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
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$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stillson Road over West Fork Wildcat Creek built?

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

What condition is Stillson Road over West Fork Wildcat Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Stillson Road over West Fork Wildcat Creek carry?

About 90 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Stillson Road over West Fork Wildcat Creek?

The structure is 69 ft (21.1 m) long with a longest span of 31 ft (9.5 m) and a deck 20 ft wide.

Who owns Stillson Road over West Fork Wildcat Creek?

It is owned by the County Highway Agency.