US Bridges

I-82 over Thorp RD

Good

Yakima County, Washington · 2.5 E JCT US 97 · Structure no. 0011631A0000000

Built
1980
45 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
102 ft
1 main span
Daily traffic
14,477
2023 count
Owner
State
State Highway Agency

About this bridge

I-82 over Thorp RD is a prestressed concrete stringer/multi-beam or girder carrying I-82 over Thorp RD 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,477 vehicles a day, roughly 15% of them trucks, projected to reach 17,798 by 2039. The structure is 102 ft (31.1 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-82
CrossesThorp RD
Location2.5 E JCT US 97
RouteInterstate 82
Coordinates46.51131, -120.45252
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
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 rating70 US tons
Inventory rating41 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length102 ft (31.1 m)
Longest span102 ft (31.1 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,477 (2023)
Projected traffic17,798 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 Thorp RD built?

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

What condition is I-82 over Thorp RD in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does I-82 over Thorp RD carry?

About 14,477 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I-82 over Thorp RD?

The structure is 102 ft (31.1 m) long with a longest span of 102 ft (31.1 m) and a deck 41 ft wide.

Who owns I-82 over Thorp RD?

It is owned by the State Highway Agency.