US Bridges

Cooper Road over Stage Gulch Ditch

Good

Umatilla County, Oregon · At Int. With N. Loop · Structure no. 20368 117100001

Built
2006
19 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
80
2020 count
Owner
County
County Highway Agency

About this bridge

Cooper Road over Stage Gulch Ditch is a prestressed concrete slab carrying Cooper Road over Stage Gulch Ditch in Umatilla County, Oregon. It was built in 2006, so it is 19 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 80 vehicles a day, roughly 20% of them trucks, projected to reach 85 by 2025. The structure is 44 ft (13.4 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesCooper Road
CrossesStage Gulch Ditch
LocationAt Int. With N. Loop
RouteCounty Highway 0
CountyUmatilla County
StateOregon
Coordinates45.7921, -119.1741
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length44 ft (13.4 m)
Longest span41 ft (12.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic85 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Cooper Road over Stage Gulch Ditch built?

It was built in 2006, making it 19 years old in 2025.

What condition is Cooper Road over Stage Gulch 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 July 2024.

How much traffic does Cooper Road over Stage Gulch Ditch carry?

About 80 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Cooper Road over Stage Gulch Ditch?

The structure is 44 ft (13.4 m) long with a longest span of 41 ft (12.5 m) and a deck 24 ft wide.

Who owns Cooper Road over Stage Gulch Ditch?

It is owned by the County Highway Agency.