US Bridges

Or 86 (hwy 012) over Snake River (oxbow)

Fair

Adams County, Idaho · Ore-Idaho State Line · Structure no. 000000000026394

Built
1961
64 years old, rebuilt 2001
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
482 ft
9 main spans
Daily traffic
98
2023 count
Owner
State
State Highway Agency

About this bridge

Or 86 (hwy 012) over Snake River (oxbow) is a steel stringer/multi-beam or girder carrying Or 86 (hwy 012) over Snake River (oxbow) in Adams County, Idaho. It was built in 1961 and reconstructed in 2001, so it is 64 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 98 vehicles a day, roughly 26% of them trucks, projected to reach 110 by 2040. The structure is 482 ft (146.8 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOr 86 (hwy 012)
CrossesSnake River (oxbow)
LocationOre-Idaho State Line
RouteState Highway 860
CountyAdams County
StateIdaho
Coordinates44.97486, -116.85669
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.7 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans9
Design loadH 20
Structure length482 ft (146.8 m)
Longest span60 ft (18.3 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2023)
Projected traffic110 by 2040
Trucks26%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Or 86 (hwy 012) over Snake River (oxbow) built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2001.

What condition is Or 86 (hwy 012) over Snake River (oxbow) 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 July 2024.

How much traffic does Or 86 (hwy 012) over Snake River (oxbow) carry?

About 98 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is Or 86 (hwy 012) over Snake River (oxbow)?

The structure is 482 ft (146.8 m) long with a longest span of 60 ft (18.3 m) and a deck 31 ft wide.

Who owns Or 86 (hwy 012) over Snake River (oxbow)?

It is owned by the State Highway Agency.