US Bridges

Wildwood Road over Stillwater Creek

FairPosted for load

Lewis County, Washington · 0.04 NW JCT SR 506 · Structure no. 084561000000000

Built
1962
63 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete
Length
150 ft
3 main spans
Daily traffic
239
2021 count
Owner
County
County Highway Agency

About this bridge

Wildwood Road over Stillwater Creek is a concrete tee beam carrying Wildwood Road over Stillwater Creek in Lewis County, Washington. It was built in 1962, so it is 63 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. Its operating status is: posted for load restriction.

It carries about 239 vehicles a day, roughly 33% of them trucks, projected to reach 432 by 2041. The structure is 150 ft (45.7 m) long and 27 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesWildwood Road
CrossesStillwater Creek
Location0.04 NW JCT SR 506
RouteCounty Highway 93003
CountyLewis County
StateWashington
Coordinates46.39788, -123.03781
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating21.8 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length150 ft (45.7 m)
Longest span57 ft (17.4 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic239 (2021)
Projected traffic432 by 2041
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wildwood Road over Stillwater Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Wildwood Road over Stillwater 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 December 2023.

How much traffic does Wildwood Road over Stillwater Creek carry?

About 239 vehicles per day (2021 count), of which roughly 33% are trucks.

How long is Wildwood Road over Stillwater Creek?

The structure is 150 ft (45.7 m) long with a longest span of 57 ft (17.4 m) and a deck 27 ft wide.

Who owns Wildwood Road over Stillwater Creek?

It is owned by the County Highway Agency.