US Bridges

HWY 361 SB over N Unit Ochoco Main Canal

Fair

Jefferson County, Oregon · 023 MI S Culver · Structure no. 06827A361 01125

Built
1971
54 years old
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
81 ft
3 main spans
Daily traffic
2,474
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 361 SB over N Unit Ochoco Main Canal is a prestressed concrete slab carrying HWY 361 SB over N Unit Ochoco Main Canal in Jefferson County, Oregon. It was built in 1971, so it is 54 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 2,474 vehicles a day, roughly 2% of them trucks, projected to reach 3,000 by 2042. The structure is 81 ft (24.7 m) long and 40 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesHWY 361 SB
CrossesN Unit Ochoco Main Canal
Location023 MI S Culver
RouteState Highway 361
CountyJefferson County
StateOregon
Coordinates44.4962, -121.19486
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum 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 alignment7: Better than present minimum criteria
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span27 ft (8.2 m)
Deck width40 ft (12.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,474 (2022)
Projected traffic3,000 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 HWY 361 SB over N Unit Ochoco Main Canal built?

It was built in 1971, making it 54 years old in 2025.

What condition is HWY 361 SB over N Unit Ochoco Main 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 March 2023.

How much traffic does HWY 361 SB over N Unit Ochoco Main Canal carry?

About 2,474 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is HWY 361 SB over N Unit Ochoco Main Canal?

The structure is 81 ft (24.7 m) long with a longest span of 27 ft (8.2 m) and a deck 40 ft wide.

Who owns HWY 361 SB over N Unit Ochoco Main Canal?

It is owned by the State Highway Agency.