US Bridges

N Hendrickson DR over Kalama River

Good

Cowlitz County, Washington · 0.08 S W Kalama River RD · Structure no. 086841000000000

Built
2001
24 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
380 ft
1 main span
Daily traffic
600
2020 count
Owner
County
County Highway Agency

About this bridge

N Hendrickson DR over Kalama River is a steel stringer/multi-beam or girder carrying N Hendrickson DR over Kalama River in Cowlitz County, Washington. It was built in 2001, so it is 24 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 600 vehicles a day, roughly 18% of them trucks, projected to reach 790 by 2040. The structure is 380 ft (115.8 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN Hendrickson DR
CrossesKalama River
Location0.08 S W Kalama River RD
RouteCounty Highway 34652
CountyCowlitz County
StateWashington
Coordinates46.03944, -122.86583
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 25 or greater
Structure length380 ft (115.8 m)
Longest span280 ft (85.3 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2020)
Projected traffic790 by 2040
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$7.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was N Hendrickson DR over Kalama River built?

It was built in 2001, making it 24 years old in 2025.

What condition is N Hendrickson DR over Kalama River 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 2023.

How much traffic does N Hendrickson DR over Kalama River carry?

About 600 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is N Hendrickson DR over Kalama River?

The structure is 380 ft (115.8 m) long with a longest span of 280 ft (85.3 m) and a deck 38 ft wide.

Who owns N Hendrickson DR over Kalama River?

It is owned by the County Highway Agency.