US Bridges

W Kalama River RD over Bnrr

Fair

Cowlitz County, Washington · 0.13 E I-5 Exit 32 · Structure no. 084174000000000

Built
1976
49 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
196 ft
3 main spans
Daily traffic
1,250
2023 count
Owner
County
County Highway Agency

About this bridge

W Kalama River RD over Bnrr is a prestressed concrete continuous stringer/multi-beam or girder carrying W Kalama River RD over Bnrr in Cowlitz County, Washington. It was built in 1976, so it is 49 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 1,250 vehicles a day, roughly 25% of them trucks, projected to reach 1,700 by 2043. The structure is 196 ft (59.7 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesW Kalama River RD
CrossesBnrr
Location0.13 E I-5 Exit 32
RouteCounty Highway 40300
CountyCowlitz County
StateWashington
Coordinates46.04083, -122.86139
Functional classRural Local

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.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length196 ft (59.7 m)
Longest span74 ft (22.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,250 (2023)
Projected traffic1,700 by 2043
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 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$7.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W Kalama River RD over Bnrr built?

It was built in 1976, making it 49 years old in 2025.

What condition is W Kalama River RD over 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 January 2023.

How much traffic does W Kalama River RD over Bnrr carry?

About 1,250 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is W Kalama River RD over Bnrr?

The structure is 196 ft (59.7 m) long with a longest span of 74 ft (22.6 m) and a deck 31 ft wide.

Who owns W Kalama River RD over Bnrr?

It is owned by the County Highway Agency.