US Bridges

I-84 (hwy 006) EB over Alder Crk and UPRR

Fair

Baker County, Oregon · 308 MI NW Malheur CO Line · Structure no. 08941E006 32123

Built
1964
61 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
377 ft
6 main spans
Daily traffic
5,898
2022 count
Owner
State
State Highway Agency

About this bridge

I-84 (hwy 006) EB over Alder Crk and UPRR is a prestressed concrete stringer/multi-beam or girder carrying I-84 (hwy 006) EB over Alder Crk and UPRR in Baker County, Oregon. It was built in 1964, so it is 61 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 5,898 vehicles a day, roughly 45% of them trucks, projected to reach 6,950 by 2042. The structure is 377 ft (114.9 m) long and 35 ft wide.

Location

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CarriesI-84 (hwy 006) EB
CrossesAlder Crk and UPRR
Location308 MI NW Malheur CO Line
RouteInterstate 84
CountyBaker County
StateOregon
Coordinates44.64589, -117.55224
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length377 ft (114.9 m)
Longest span78 ft (23.8 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,898 (2022)
Projected traffic6,950 by 2042
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-84 (hwy 006) EB over Alder Crk and UPRR built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-84 (hwy 006) EB over Alder Crk and UPRR 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 April 2023.

How much traffic does I-84 (hwy 006) EB over Alder Crk and UPRR carry?

About 5,898 vehicles per day (2022 count), of which roughly 45% are trucks.

How long is I-84 (hwy 006) EB over Alder Crk and UPRR?

The structure is 377 ft (114.9 m) long with a longest span of 78 ft (23.8 m) and a deck 35 ft wide.

Who owns I-84 (hwy 006) EB over Alder Crk and UPRR?

It is owned by the State Highway Agency.