US Bridges

I-82 over Naches River

FairPosted for load

Yakima County, Washington · 0.5 E JCT SR 823 · Structure no. 0001583B0000000

Built
1932
93 years old
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel
Length
276 ft
1 main span
Daily traffic
24,488
2023 count
Owner
State
State Highway Agency

About this bridge

I-82 over Naches River is a steel truss - thru carrying I-82 over Naches River in Yakima County, Washington. It was built in 1932, so it is 93 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. Its operating status is: posted for load restriction.

It carries about 24,488 vehicles a day, roughly 12% of them trucks, projected to reach 31,779 by 2039. The structure is 276 ft (84.1 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-82
CrossesNaches River
Location0.5 E JCT SR 823
RouteInterstate 82
CountyYakima County
StateWashington
Coordinates46.63036, -120.51561
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating48.9 US tons
Inventory rating29 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length276 ft (84.1 m)
Longest span180 ft (54.9 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic24,488 (2023)
Projected traffic31,779 by 2039
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-82 over Naches River built?

It was built in 1932, making it 93 years old in 2025.

What condition is I-82 over Naches 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 Naches River carry?

About 24,488 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is I-82 over Naches River?

The structure is 276 ft (84.1 m) long with a longest span of 180 ft (54.9 m) and a deck 38 ft wide.

Who owns I-82 over Naches River?

It is owned by the State Highway Agency.