US Bridges

Island Rd. over Toppenish Creek

FairPosted for load

Yakima County, Washington · 00.49 S Marion Dr. · Structure no. 082750000000000

Built
1958
67 years old
Condition
Fair
inspected January 2023
Type
Channel Beam
Concrete
Length
70 ft
3 main spans
Daily traffic
157
2023 count
Owner
County
County Highway Agency

About this bridge

Island Rd. over Toppenish Creek is a concrete channel beam carrying Island Rd. over Toppenish Creek in Yakima County, Washington. It was built in 1958, so it is 67 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 157 vehicles a day, roughly 5% of them trucks, projected to reach 180 by 2043. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesIsland Rd.
CrossesToppenish Creek
Location00.49 S Marion Dr.
RouteCounty Highway 53850
CountyYakima County
StateWashington
Coordinates46.33833, -120.585
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans3
Design loadH 20
Structure length70 ft (21.3 m)
Longest span32 ft (9.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic157 (2023)
Projected traffic180 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Island Rd. over Toppenish Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Island Rd. over Toppenish Creek 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 January 2023.

How much traffic does Island Rd. over Toppenish Creek carry?

About 157 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Island Rd. over Toppenish Creek?

The structure is 70 ft (21.3 m) long with a longest span of 32 ft (9.8 m) and a deck 24 ft wide.

Who owns Island Rd. over Toppenish Creek?

It is owned by the County Highway Agency.