US Bridges

Wallupa Road over Grande Ronde River

Good

Wallowa County, Oregon · 30.7 MI N of HWY 82 · Structure no. 16753 501 03072

Built
1986
39 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
214 ft
1 main span
Daily traffic
70
2020 count
Owner
County
County Highway Agency

About this bridge

Wallupa Road over Grande Ronde River is a steel stringer/multi-beam or girder carrying Wallupa Road over Grande Ronde River in Wallowa County, Oregon. It was built in 1986, so it is 39 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 214 ft (65.2 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesWallupa Road
CrossesGrande Ronde River
Location30.7 MI N of HWY 82
RouteCounty Highway 0
CountyWallowa County
StateOregon
Coordinates45.89905, -117.48329
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadUnknown
Structure length214 ft (65.2 m)
Longest span154 ft (46.9 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.2 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 Grande Ronde River built?

It was built in 1986, making it 39 years old in 2025.

What condition is Wallupa Road over Grande Ronde River 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 Grande Ronde River carry?

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

How long is Wallupa Road over Grande Ronde River?

The structure is 214 ft (65.2 m) long with a longest span of 154 ft (46.9 m) and a deck 30 ft wide.

Who owns Wallupa Road over Grande Ronde River?

It is owned by the County Highway Agency.