US Bridges

I-82 over Mellis Road

Fair

Yakima County, Washington · 4.7 E JCT US 97 · Structure no. 0011366A0000000

Built
1980
45 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
14,654
2023 count
Owner
State
State Highway Agency

About this bridge

I-82 over Mellis Road is a prestressed concrete stringer/multi-beam or girder carrying I-82 over Mellis Road in Yakima County, Washington. It was built in 1980, so it is 45 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 14,654 vehicles a day, roughly 15% of them trucks, projected to reach 17,995 by 2039. The structure is 101 ft (30.8 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-82
CrossesMellis Road
Location4.7 E JCT US 97
RouteInterstate 82
CountyYakima County
StateWashington
Coordinates46.48931, -120.42267
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length101 ft (30.8 m)
Longest span96 ft (29.3 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,654 (2023)
Projected traffic17,995 by 2039
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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$1.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-82 over Mellis Road built?

It was built in 1980, making it 45 years old in 2025.

What condition is I-82 over Mellis Road 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 July 2024.

How much traffic does I-82 over Mellis Road carry?

About 14,654 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I-82 over Mellis Road?

The structure is 101 ft (30.8 m) long with a longest span of 96 ft (29.3 m) and a deck 41 ft wide.

Who owns I-82 over Mellis Road?

It is owned by the State Highway Agency.