US Bridges

Loup Loup Canyon R over Loup Loup Creek

Good

Okanogan County, Washington · 3.98 MI N JCT SR20 · Structure no. 088708000000000

Built
2014
11 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
1
2023 count
Owner
County
County Highway Agency

About this bridge

Loup Loup Canyon R over Loup Loup Creek is a prestressed concrete slab carrying Loup Loup Canyon R over Loup Loup Creek in Okanogan County, Washington. It was built in 2014, so it is 11 years old, younger 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 1 vehicles a day, projected to reach 35 by 2043. The structure is 52 ft (15.8 m) long and 28 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

CarriesLoup Loup Canyon R
CrossesLoup Loup Creek
Location3.98 MI N JCT SR20
RouteCounty Highway 20450
Coordinates48.40694, -119.75896
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating63.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length52 ft (15.8 m)
Longest span49 ft (14.8 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2023)
Projected traffic35 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$642,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Loup Loup Canyon R over Loup Loup Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Loup Loup Canyon R over Loup Loup 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 2024.

How much traffic does Loup Loup Canyon R over Loup Loup Creek carry?

About 1 vehicles per day (2023 count).

How long is Loup Loup Canyon R over Loup Loup Creek?

The structure is 52 ft (15.8 m) long with a longest span of 49 ft (14.8 m) and a deck 28 ft wide.

Who owns Loup Loup Canyon R over Loup Loup Creek?

It is owned by the County Highway Agency.