US Bridges

FAS Route U243 over Similkameen River

FairPosted for load

Okanogan County, Washington · .NESWS28T40NR27E · Structure no. 083864000000000

Built
1950
75 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete Continuous
Length
365 ft
6 main spans
Daily traffic
985
2020 count
Owner
County
County Highway Agency

About this bridge

FAS Route U243 over Similkameen River is a concrete continuous tee beam carrying FAS Route U243 over Similkameen River in Okanogan County, Washington. It was built in 1950, so it is 75 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 985 vehicles a day, roughly 10% of them trucks, projected to reach 1,500 by 2041. The structure is 365 ft (111.4 m) long and 34 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesFAS Route U243
CrossesSimilkameen River
Location.NESWS28T40NR27E
RouteCounty Highway 94370
Coordinates48.93453, -119.44233
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating19 US tons
Inventory rating14.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 15
Structure length365 ft (111.4 m)
Longest span90 ft (27.4 m)
Deck width34 ft (10.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic985 (2020)
Projected traffic1,500 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed21.1 mi (34 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$4.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS Route U243 over Similkameen River built?

It was built in 1950, making it 75 years old in 2025.

What condition is FAS Route U243 over Similkameen 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 October 2023.

How much traffic does FAS Route U243 over Similkameen River carry?

About 985 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is FAS Route U243 over Similkameen River?

The structure is 365 ft (111.4 m) long with a longest span of 90 ft (27.4 m) and a deck 34 ft wide.

Who owns FAS Route U243 over Similkameen River?

It is owned by the County Highway Agency.