US Bridges

West Wallowa Ave over Big Bend Ditch

Good

Wallowa County, Oregon · W of Joseph @ Mill ST · Structure no. 000604000000000

Built
1935
90 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
914
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Wallowa Ave over Big Bend Ditch is a concrete continuous culvert carrying West Wallowa Ave over Big Bend Ditch in Wallowa County, Oregon. It was built in 1935, so it is 90 years old, older 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 914 vehicles a day, roughly 5% of them trucks, projected to reach 1,079 by 2025. The structure is 21 ft (6.4 m) long and 37 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesWest Wallowa Ave
CrossesBig Bend Ditch
LocationW of Joseph @ Mill ST
RouteCity Street 0
StateOregon
Coordinates45.35432, -117.23128
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width37 ft (11.3 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic914 (2020)
Projected traffic1,079 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 West Wallowa Ave over Big Bend Ditch built?

It was built in 1935, making it 90 years old in 2025.

What condition is West Wallowa Ave over Big Bend Ditch 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 2024.

How much traffic does West Wallowa Ave over Big Bend Ditch carry?

About 914 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is West Wallowa Ave over Big Bend Ditch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 37 ft wide.

Who owns West Wallowa Ave over Big Bend Ditch?

It is owned by the City or Municipal Highway Agency.