US Bridges

Kalama R RD over I-5

Fair

Cowlitz County, Washington · 11.1 N JCT SR 503 · Structure no. 0008759E0000000

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
292 ft
2 main spans
Daily traffic
2,509
2016 count
Owner
State
State Highway Agency

About this bridge

Kalama R RD over I-5 is a steel stringer/multi-beam or girder carrying Kalama R RD over I-5 in Cowlitz County, Washington. It was built in 1970, so it is 55 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 5 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 2,509 vehicles a day, roughly 1% of them trucks, projected to reach 3,619 by 2038. The structure is 292 ft (89 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesKalama R RD
CrossesI-5
Location11.1 N JCT SR 503
RouteCounty Highway 0
CountyCowlitz County
StateWashington
Coordinates46.04122, -122.85958
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
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 alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length292 ft (89 m)
Longest span144 ft (43.9 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,509 (2016)
Projected traffic3,619 by 2038
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Kalama R RD over I-5 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Kalama R RD over I-5 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 May 2024.

How much traffic does Kalama R RD over I-5 carry?

About 2,509 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Kalama R RD over I-5?

The structure is 292 ft (89 m) long with a longest span of 144 ft (43.9 m) and a deck 41 ft wide.

Who owns Kalama R RD over I-5?

It is owned by the State Highway Agency.