US Bridges

Ocr 3358 over Omak Creek

Good

Okanogan County, Washington · 0.43 NE.JCT.SR155 · Structure no. 084839000000000

Built
1973
52 years old
Condition
Good
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
463
2019 count
Owner
County
County Highway Agency

About this bridge

Ocr 3358 over Omak Creek is a prestressed concrete tee beam carrying Ocr 3358 over Omak 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 463 vehicles a day, roughly 10% of them trucks, projected to reach 600 by 2041. The structure is 50 ft (15.2 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOcr 3358
CrossesOmak Creek
Location0.43 NE.JCT.SR155
RouteCounty Highway 33580
Coordinates48.40544, -119.50128
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating31.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span49 ft (15 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic463 (2019)
Projected traffic600 by 2041
Trucks10%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$522,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ocr 3358 over Omak Creek built?

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

What condition is Ocr 3358 over Omak Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Ocr 3358 over Omak Creek carry?

About 463 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Ocr 3358 over Omak Creek?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (15 m) and a deck 24 ft wide.

Who owns Ocr 3358 over Omak Creek?

It is owned by the County Highway Agency.