US Bridges

West Side HWY over Olequa Creek & Bnrr

Fair

Cowlitz County, Washington · 7.24 N SR 411 (mp 12.01) · Structure no. 0010756A0000000

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
650 ft
6 main spans
Daily traffic
1,100
2018 count
Owner
County
County Highway Agency

About this bridge

West Side HWY over Olequa Creek & Bnrr is a prestressed concrete continuous stringer/multi-beam or girder carrying West Side HWY over Olequa Creek & Bnrr in Cowlitz County, Washington. It was built in 1978, so it is 47 years old, younger 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 1,100 vehicles a day, roughly 17% of them trucks, projected to reach 1,515 by 2039. The structure is 650 ft (198.1 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesWest Side HWY
CrossesOlequa Creek & Bnrr
Location7.24 N SR 411 (mp 12.01)
RouteCounty Highway 26000
CountyCowlitz County
StateWashington
Coordinates46.37333, -122.94306
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating53 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length650 ft (198.1 m)
Longest span140 ft (42.7 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2018)
Projected traffic1,515 by 2039
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed19.9 mi (32 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$11.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was West Side HWY over Olequa Creek & Bnrr built?

It was built in 1978, making it 47 years old in 2025.

What condition is West Side HWY over Olequa Creek & Bnrr 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 2023.

How much traffic does West Side HWY over Olequa Creek & Bnrr carry?

About 1,100 vehicles per day (2018 count), of which roughly 17% are trucks.

How long is West Side HWY over Olequa Creek & Bnrr?

The structure is 650 ft (198.1 m) long with a longest span of 140 ft (42.7 m) and a deck 35 ft wide.

Who owns West Side HWY over Olequa Creek & Bnrr?

It is owned by the County Highway Agency.