US Bridges

I-84 (hwy 002) over Arlington Viaduct

Fair

Gilliam County, Oregon · 009 MI W Arlington · Structure no. 08820 002 13791

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
1,463 ft
11 main spans
Daily traffic
14,069
2022 count
Owner
State
State Highway Agency

About this bridge

I-84 (hwy 002) over Arlington Viaduct is a steel stringer/multi-beam or girder carrying I-84 (hwy 002) over Arlington Viaduct in Gilliam 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 14,069 vehicles a day, roughly 26% of them trucks, projected to reach 16,100 by 2042. The structure is 1,463 ft (445.9 m) long and 67 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesI-84 (hwy 002)
CrossesArlington Viaduct
Location009 MI W Arlington
RouteInterstate 84
CountyGilliam County
StateOregon
Coordinates45.72138, -120.20456
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating18.5 US tons
Inventory rating14.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans11 (+5 approach)
Design loadHS 20
Structure length1,463 ft (445.9 m)
Longest span140 ft (42.7 m)
Deck width67 ft (20.5 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,069 (2022)
Projected traffic16,100 by 2042
Trucks26%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed21.1 mi (34 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$16.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-84 (hwy 002) over Arlington Viaduct built?

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

What condition is I-84 (hwy 002) over Arlington Viaduct 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 I-84 (hwy 002) over Arlington Viaduct carry?

About 14,069 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is I-84 (hwy 002) over Arlington Viaduct?

The structure is 1,463 ft (445.9 m) long with a longest span of 140 ft (42.7 m) and a deck 67 ft wide.

Who owns I-84 (hwy 002) over Arlington Viaduct?

It is owned by the State Highway Agency.