US Bridges

FAS Route K241 over Chewuch River

Fair

Okanogan County, Washington · 6.5 MI N of Winthrop · Structure no. 079912000000000

Built
1953
72 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
173
2022 count
Owner
County
County Highway Agency

About this bridge

FAS Route K241 over Chewuch River is a concrete continuous stringer/multi-beam or girder carrying FAS Route K241 over Chewuch River in Okanogan County, Washington. It was built in 1953, so it is 72 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.

It carries about 173 vehicles a day, roughly 15% of them trucks, projected to reach 200 by 2042. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesFAS Route K241
CrossesChewuch River
Location6.5 MI N of Winthrop
RouteCounty Highway 91370
Coordinates48.56459, -120.17802
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 inspectionSeptember 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 alignment6: Equal to present minimum criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span76 ft (23.3 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic173 (2022)
Projected traffic200 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$4.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS Route K241 over Chewuch River built?

It was built in 1953, making it 72 years old in 2025.

What condition is FAS Route K241 over Chewuch 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 2024.

How much traffic does FAS Route K241 over Chewuch River carry?

About 173 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is FAS Route K241 over Chewuch River?

The structure is 120 ft (36.6 m) long with a longest span of 76 ft (23.3 m) and a deck 29 ft wide.

Who owns FAS Route K241 over Chewuch River?

It is owned by the County Highway Agency.