US Bridges

I-84 (hwy 006) EB over Malheur River

Fair

Malheur County, Oregon · 039 MI NW Idaho State LN · Structure no. 07935A006 37407

Built
1973
52 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
410 ft
5 main spans
Daily traffic
9,549
2022 count
Owner
State
State Highway Agency

About this bridge

I-84 (hwy 006) EB over Malheur River is a prestressed concrete stringer/multi-beam or girder carrying I-84 (hwy 006) EB over Malheur River in Malheur County, Oregon. It was built in 1973, so it is 52 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 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 9,549 vehicles a day, roughly 18% of them trucks, projected to reach 12,850 by 2042. The structure is 410 ft (125 m) long and 46 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesI-84 (hwy 006) EB
CrossesMalheur River
Location039 MI NW Idaho State LN
RouteInterstate 84
CountyMalheur County
StateOregon
Coordinates44.05336, -116.98258
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
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 geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length410 ft (125 m)
Longest span85 ft (25.9 m)
Deck width46 ft (13.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,549 (2022)
Projected traffic12,850 by 2042
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-84 (hwy 006) EB over Malheur River built?

It was built in 1973, making it 52 years old in 2025.

What condition is I-84 (hwy 006) EB over Malheur River 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 I-84 (hwy 006) EB over Malheur River carry?

About 9,549 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is I-84 (hwy 006) EB over Malheur River?

The structure is 410 ft (125 m) long with a longest span of 85 ft (25.9 m) and a deck 46 ft wide.

Who owns I-84 (hwy 006) EB over Malheur River?

It is owned by the State Highway Agency.