US Bridges

Wildwood Road over Black Creek

Good

Lewis County, Washington · 2.99 NW SR 506 · Structure no. 088741000000000

Built
2013
12 years old
Condition
Good
inspected March 2024
Type
Frame
Concrete
Length
30 ft
1 main span
Daily traffic
170
2021 count
Owner
County
County Highway Agency

About this bridge

Wildwood Road over Black Creek is a concrete frame carrying Wildwood Road over Black Creek in Lewis County, Washington. It was built in 2013, so it is 12 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 170 vehicles a day, roughly 24% of them trucks, projected to reach 308 by 2041. The structure is 30 ft (9.1 m) long and 45 ft wide. If it were closed, the detour would be 39.1 mi (63 km).

CarriesWildwood Road
CrossesBlack Creek
Location2.99 NW SR 506
RouteCounty Highway 92004
Coordinates46.41328, -123.08333
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 alignment6: Equal to present minimum criteria
Operating rating52 US tons
Inventory rating40 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width45 ft (13.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2021)
Projected traffic308 by 2041
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.1 mi (63 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$428,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wildwood Road over Black Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is Wildwood Road over Black Creek 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 March 2024.

How much traffic does Wildwood Road over Black Creek carry?

About 170 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is Wildwood Road over Black Creek?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 45 ft wide.

Who owns Wildwood Road over Black Creek?

It is owned by the County Highway Agency.