US Bridges

HWY 371 over Powell Butte Canal

Fair

Crook County, Oregon · 023 MI S HWY 41 JCT · Structure no. 03291 371 00227

Built
1954
71 years old
Condition
Fair
inspected December 2024
Type
Channel Beam
Concrete
Length
54 ft
3 main spans
Daily traffic
4,833
2020 count
Owner
County
County Highway Agency

About this bridge

HWY 371 over Powell Butte Canal is a concrete channel beam carrying HWY 371 over Powell Butte Canal in Crook County, Oregon. It was built in 1954, so it is 71 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,833 vehicles a day, roughly 6% of them trucks, projected to reach 5,583 by 2025. The structure is 54 ft (16.5 m) long and 30 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

Location

Open in Google Maps
CarriesHWY 371
CrossesPowell Butte Canal
Location023 MI S HWY 41 JCT
RouteState Highway 371
CountyCrook County
StateOregon
Coordinates44.21551, -121.04704
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span16 ft (4.9 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,833 (2020)
Projected traffic5,583 by 2025
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed17.4 mi (28 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$277,000
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY 371 over Powell Butte Canal built?

It was built in 1954, making it 71 years old in 2025.

What condition is HWY 371 over Powell Butte Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does HWY 371 over Powell Butte Canal carry?

About 4,833 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is HWY 371 over Powell Butte Canal?

The structure is 54 ft (16.5 m) long with a longest span of 16 ft (4.9 m) and a deck 30 ft wide.

Who owns HWY 371 over Powell Butte Canal?

It is owned by the County Highway Agency.