US Bridges

I-84 (hwy 006) WB over North Powder River

Fair

Union County, Oregon · Union-Baker County Line · Structure no. 07293A006 28619

Built
1972
53 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
6,205
2022 count
Owner
State
State Highway Agency

About this bridge

I-84 (hwy 006) WB over North Powder River is a prestressed concrete stringer/multi-beam or girder carrying I-84 (hwy 006) WB over North Powder River in Union County, Oregon. It was built in 1972, so it is 53 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 6,205 vehicles a day, roughly 36% of them trucks, projected to reach 7,000 by 2042. The structure is 96 ft (29.4 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesI-84 (hwy 006) WB
CrossesNorth Powder River
LocationUnion-Baker County Line
RouteInterstate 84
CountyUnion County
StateOregon
Coordinates45.01888, -117.92196
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 US tons
Inventory rating26.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length96 ft (29.4 m)
Longest span94 ft (28.7 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,205 (2022)
Projected traffic7,000 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-84 (hwy 006) WB over North Powder River built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-84 (hwy 006) WB over North Powder 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 2024.

How much traffic does I-84 (hwy 006) WB over North Powder River carry?

About 6,205 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-84 (hwy 006) WB over North Powder River?

The structure is 96 ft (29.4 m) long with a longest span of 94 ft (28.7 m) and a deck 44 ft wide.

Who owns I-84 (hwy 006) WB over North Powder River?

It is owned by the State Highway Agency.