US Bridges

SR 821 over Wilson CR

FairPosted for load

Kittitas County, Washington · 20.2 N Yakima CO · Structure no. 0003317A0000000

Built
1947
78 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
88 ft
3 main spans
Daily traffic
1,181
2023 count
Owner
State
State Highway Agency

About this bridge

SR 821 over Wilson CR is a concrete continuous tee beam carrying SR 821 over Wilson CR in Kittitas County, Washington. It was built in 1947, so it is 78 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 6 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 1,181 vehicles a day, roughly 17% of them trucks, projected to reach 1,492 by 2039. The structure is 88 ft (26.8 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSR 821
CrossesWilson CR
Location20.2 N Yakima CO
RouteState Highway 821
CountyKittitas County
StateWashington
Coordinates46.92619, -120.50156
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating26.1 US tons
Inventory rating20.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length88 ft (26.8 m)
Longest span56 ft (17.1 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,181 (2023)
Projected traffic1,492 by 2039
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 821 over Wilson CR built?

It was built in 1947, making it 78 years old in 2025.

What condition is SR 821 over Wilson CR 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 August 2024.

How much traffic does SR 821 over Wilson CR carry?

About 1,181 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is SR 821 over Wilson CR?

The structure is 88 ft (26.8 m) long with a longest span of 56 ft (17.1 m) and a deck 28 ft wide.

Who owns SR 821 over Wilson CR?

It is owned by the State Highway Agency.