US Bridges

County Road 1050 over Asotin Creek

Fair

Asotin County, Washington · 0.1S JCT CO RD 1100 · Structure no. 083243000000000

Built
1951
74 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
102 ft
1 main span
Daily traffic
230
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 1050 over Asotin Creek is a concrete continuous tee beam carrying County Road 1050 over Asotin Creek in Asotin County, Washington. It was built in 1951, so it is 74 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.

It carries about 230 vehicles a day, roughly 21% of them trucks, projected to reach 644 by 2040. The structure is 102 ft (31.1 m) long and 31 ft wide. If it were closed, the detour would be 39.1 mi (63 km).

Location

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CarriesCounty Road 1050
CrossesAsotin Creek
Location0.1S JCT CO RD 1100
RouteCounty Highway 105
CountyAsotin County
StateWashington
Coordinates46.3259, -117.10873
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 25 or greater
Structure length102 ft (31.1 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2020)
Projected traffic644 by 2040
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed39.1 mi (63 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 1050 over Asotin Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is County Road 1050 over Asotin 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 April 2024.

How much traffic does County Road 1050 over Asotin Creek carry?

About 230 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is County Road 1050 over Asotin Creek?

The structure is 102 ft (31.1 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns County Road 1050 over Asotin Creek?

It is owned by the County Highway Agency.