US Bridges

Donald Wapato Rd. over Yakima River

Good

Yakima County, Washington · .284 SW I-82 · Structure no. 087165000000000

Built
2004
21 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,100 ft
8 main spans
Daily traffic
5,000
2019 count
Owner
County
County Highway Agency

About this bridge

Donald Wapato Rd. over Yakima River is a prestressed concrete stringer/multi-beam or girder carrying Donald Wapato Rd. over Yakima River in Yakima County, Washington. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 8,400 by 2039. The structure is 1,100 ft (335.3 m) long and 42 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesDonald Wapato Rd.
CrossesYakima River
Location.284 SW I-82
RouteCounty Highway 50180
Coordinates46.46464, -120.39956
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating28.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8 (+2 approach)
Design loadHL 93
Structure length1,100 ft (335.3 m)
Longest span157 ft (47.9 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2019)
Projected traffic8,400 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$40.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Donald Wapato Rd. over Yakima River built?

It was built in 2004, making it 21 years old in 2025.

What condition is Donald Wapato Rd. over Yakima River 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 March 2023.

How much traffic does Donald Wapato Rd. over Yakima River carry?

About 5,000 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Donald Wapato Rd. over Yakima River?

The structure is 1,100 ft (335.3 m) long with a longest span of 157 ft (47.9 m) and a deck 42 ft wide.

Who owns Donald Wapato Rd. over Yakima River?

It is owned by the County Highway Agency.