US Bridges

I-82 over Columbia River

Fair

Benton County, Washington · 1.0 E JCT SR 14 · Structure no. 000000PD0000000

Built
1955
70 years old, rebuilt 1990
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel Continuous
Length
3,380 ft
5 main spans
Daily traffic
12,770
2023 count
Owner
State
State Highway Agency

About this bridge

I-82 over Columbia River is a steel continuous truss - thru carrying I-82 over Columbia River in Benton County, Washington. It was built in 1955 and reconstructed in 1990, so it is 70 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 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 12,770 vehicles a day, roughly 22% of them trucks, projected to reach 13,737 by 2039. The structure is 3,380 ft (1,030.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-82
CrossesColumbia River
Location1.0 E JCT SR 14
RouteInterstate 82
CountyBenton County
StateWashington
Coordinates45.93494, -119.33033
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating38 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+15 approach)
Design loadHS 20 + Mod
Structure length3,380 ft (1,030.2 m)
Longest span600 ft (182.9 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic12,770 (2023)
Projected traffic13,737 by 2039
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$64.2 million (2022 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I-82 over Columbia River built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1990.

What condition is I-82 over Columbia River 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 June 2023.

How much traffic does I-82 over Columbia River carry?

About 12,770 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I-82 over Columbia River?

The structure is 3,380 ft (1,030.2 m) long with a longest span of 600 ft (182.9 m) and a deck 30 ft wide.

Who owns I-82 over Columbia River?

It is owned by the State Highway Agency.