US Bridges

County Road 9221 over Salmon Creek

Fair

Okanogan County, Washington · NWNWS31T34NR26E · Structure no. 084243000000000

Built
1949
76 years old, rebuilt 1976
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
427
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 9221 over Salmon Creek is a prestressed concrete stringer/multi-beam or girder carrying County Road 9221 over Salmon Creek in Okanogan County, Washington. It was built in 1949 and reconstructed in 1976, so it is 76 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 427 vehicles a day, roughly 8% of them trucks, projected to reach 500 by 2042. The structure is 23 ft (6.9 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty Road 9221
CrossesSalmon Creek
LocationNWNWS31T34NR26E
RouteCounty Highway 92210
CountyOkanogan County
StateWashington
Coordinates48.40692, -119.62539
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span21 ft (6.5 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic427 (2023)
Projected traffic500 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 9221 over Salmon Creek built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1976.

What condition is County Road 9221 over Salmon 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 October 2024.

How much traffic does County Road 9221 over Salmon Creek carry?

About 427 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is County Road 9221 over Salmon Creek?

The structure is 23 ft (6.9 m) long with a longest span of 21 ft (6.5 m) and a deck 24 ft wide.

Who owns County Road 9221 over Salmon Creek?

It is owned by the County Highway Agency.