US Bridges

Lake Street over Salmon Creek

Fair

Okanogan County, Washington · 0.02 MI E Main ST · Structure no. 085060000000000

Built
1973
52 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
260
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lake Street over Salmon Creek is a prestressed concrete channel beam carrying Lake Street over Salmon Creek in Okanogan County, Washington. It was built in 1973, so it is 52 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 260 vehicles a day, roughly 9% of them trucks, projected to reach 350 by 2042. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLake Street
CrossesSalmon Creek
Location0.02 MI E Main ST
RouteCity Street 255
Coordinates48.56053, -119.75006
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating22.5 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2022)
Projected traffic350 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal 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 Lake Street over Salmon Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Lake Street 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 Lake Street over Salmon Creek carry?

About 260 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Lake Street over Salmon Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7.1 m) and a deck 24 ft wide.

Who owns Lake Street over Salmon Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.