US Bridges

Wallupa Road over Wildcat Creek

Good

Wallowa County, Oregon · 26.92 MI N of HWY 82 · Structure no. 20591 501 02692

Built
2007
18 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
70
2020 count
Owner
County
County Highway Agency

About this bridge

Wallupa Road over Wildcat Creek is a prestressed concrete slab carrying Wallupa Road over Wildcat Creek in Wallowa County, Oregon. It was built in 2007, so it is 18 years old, younger than the Oregon average of 49.9 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 70 vehicles a day, roughly 5% of them trucks, projected to reach 80 by 2025. The structure is 50 ft (15.2 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesWallupa Road
CrossesWildcat Creek
Location26.92 MI N of HWY 82
RouteCounty Highway 0
StateOregon
Coordinates45.84874, -117.49915
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating60.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2020)
Projected traffic80 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wallupa Road over Wildcat Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Wallupa Road over Wildcat 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 September 2023.

How much traffic does Wallupa Road over Wildcat Creek carry?

About 70 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Wallupa Road over Wildcat Creek?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 28 ft wide.

Who owns Wallupa Road over Wildcat Creek?

It is owned by the County Highway Agency.