US Bridges

Railroad Street over Yakima River

FairPosted for load

Kittitas County, Washington · 00.26 SE I-90 · Structure no. 081234000000000

Built
1937
88 years old, rebuilt 1991
Condition
Fair
inspected September 2023
Type
Arch - Deck
Concrete
Length
200 ft
2 main spans
Daily traffic
537
2018 count
Owner
County
County Highway Agency

About this bridge

Railroad Street over Yakima River is a concrete arch - deck carrying Railroad Street over Yakima River in Kittitas County, Washington. It was built in 1937 and reconstructed in 1991, so it is 88 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 537 vehicles a day, roughly 12% of them trucks, projected to reach 1,423 by 2038. The structure is 200 ft (61 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRailroad Street
CrossesYakima River
Location00.26 SE I-90
RouteCounty Highway 15740
Coordinates47.24009, -121.18121
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.9 US tons
Inventory rating27 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadH 15
Structure length200 ft (61 m)
Longest span88 ft (26.8 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic537 (2018)
Projected traffic1,423 by 2038
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Railroad Street over Yakima River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1991.

What condition is Railroad Street over Yakima 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 September 2023.

How much traffic does Railroad Street over Yakima River carry?

About 537 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is Railroad Street over Yakima River?

The structure is 200 ft (61 m) long with a longest span of 88 ft (26.8 m) and a deck 42 ft wide.

Who owns Railroad Street over Yakima River?

It is owned by the County Highway Agency.