US Bridges

I-5 over Huntington Ave

Fair

Cowlitz County, Washington · 8.1 N JCT SR 4 · Structure no. 0009580A0000000

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
180 ft
3 main spans
Daily traffic
25,975
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over Huntington Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying I-5 over Huntington Ave in Cowlitz County, Washington. It was built in 1975, so it is 50 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 25,975 vehicles a day, roughly 21% of them trucks, projected to reach 34,869 by 2039. The structure is 180 ft (54.9 m) long and 55 ft wide.

Location

Open in Google Maps
CarriesI-5
CrossesHuntington Ave
Location8.1 N JCT SR 4
RouteInterstate 5
CountyCowlitz County
StateWashington
Coordinates46.25972, -122.88694
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionNovember 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 rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span85 ft (25.8 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,975 (2023)
Projected traffic34,869 by 2039
Trucks21%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$4.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over Huntington Ave built?

It was built in 1975, making it 50 years old in 2025.

What condition is I-5 over Huntington 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 November 2023.

How much traffic does I-5 over Huntington Ave carry?

About 25,975 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is I-5 over Huntington Ave?

The structure is 180 ft (54.9 m) long with a longest span of 85 ft (25.8 m) and a deck 55 ft wide.

Who owns I-5 over Huntington Ave?

It is owned by the State Highway Agency.