US Bridges

Wynooche Valley RD over Black Creek

Fair

Grays Harbor County, Washington · 03.1 N JCT SR 12 · Structure no. 083537000000000

Built
1967
58 years old
Condition
Fair
inspected December 2022
Type
Slab
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
1,064
2022 count
Owner
County
County Highway Agency

About this bridge

Wynooche Valley RD over Black Creek is a concrete continuous slab carrying Wynooche Valley RD over Black Creek in Grays Harbor County, Washington. It was built in 1967, so it is 58 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 1,064 vehicles a day, roughly 10% of them trucks, projected to reach 1,298 by 2042. The structure is 125 ft (38.1 m) long and 26 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

CarriesWynooche Valley RD
CrossesBlack Creek
Location03.1 N JCT SR 12
RouteCounty Highway 95190
Coordinates47.01056, -123.65306
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length125 ft (38.1 m)
Longest span47 ft (14.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,064 (2022)
Projected traffic1,298 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wynooche Valley RD over Black Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Wynooche Valley RD over Black 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 2022.

How much traffic does Wynooche Valley RD over Black Creek carry?

About 1,064 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Wynooche Valley RD over Black Creek?

The structure is 125 ft (38.1 m) long with a longest span of 47 ft (14.3 m) and a deck 26 ft wide.

Who owns Wynooche Valley RD over Black Creek?

It is owned by the County Highway Agency.