US Bridges

I-5 over C&c RY & N Pacific Ave

Fair

Cowlitz County, Washington · 2.2 N JCT SR 4 · Structure no. 0009597A0000000

Built
1976
49 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
350 ft
4 main spans
Daily traffic
30,451
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over C&c RY & N Pacific Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying I-5 over C&c RY & N Pacific Ave 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 30,451 vehicles a day, roughly 21% of them trucks, projected to reach 40,659 by 2039. The structure is 350 ft (106.7 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5
CrossesC&c RY & N Pacific Ave
Location2.2 N JCT SR 4
RouteInterstate 5
CountyCowlitz County
StateWashington
Coordinates46.17578, -122.90253
Functional classUrban Principal Arterial - Interstate

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 inspectionOctober 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 alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length350 ft (106.7 m)
Longest span108 ft (32.9 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,451 (2023)
Projected traffic40,659 by 2039
Trucks21%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over C&c RY & N Pacific Ave built?

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

What condition is I-5 over C&c RY & N Pacific Ave 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 October 2023.

How much traffic does I-5 over C&c RY & N Pacific Ave carry?

About 30,451 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is I-5 over C&c RY & N Pacific Ave?

The structure is 350 ft (106.7 m) long with a longest span of 108 ft (32.9 m) and a deck 55 ft wide.

Who owns I-5 over C&c RY & N Pacific Ave?

It is owned by the State Highway Agency.