US Bridges

Wolf Creek RD over Wolf Creek

Fair

Okanogan County, Washington · 3.2 W.SR20 @ Wnthp · Structure no. 084368000000000

Built
1963
62 years old
Condition
Fair
inspected September 2024
Type
Channel Beam
Concrete
Length
30 ft
1 main span
Daily traffic
702
2022 count
Owner
County
County Highway Agency

About this bridge

Wolf Creek RD over Wolf Creek is a concrete channel beam carrying Wolf Creek RD over Wolf Creek in Okanogan County, Washington. It was built in 1963, so it is 62 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 702 vehicles a day, roughly 3% of them trucks, projected to reach 850 by 2042. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesWolf Creek RD
CrossesWolf Creek
Location3.2 W.SR20 @ Wnthp
RouteCounty Highway 11310
Coordinates48.49026, -120.23187
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating64.6 US tons
Inventory rating50 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic702 (2022)
Projected traffic850 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wolf Creek RD over Wolf Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Wolf Creek RD over Wolf 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 September 2024.

How much traffic does Wolf Creek RD over Wolf Creek carry?

About 702 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Wolf Creek RD over Wolf Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns Wolf Creek RD over Wolf Creek?

It is owned by the County Highway Agency.