US Bridges

I-84 (hwy 002) WB over Eagle Creek Viaduct

Fair

Multnomah County, Oregon · 007 MI E Bonneville Conn · Structure no. 09382 002 04131

Built
1969
56 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,752 ft
21 main spans
Daily traffic
13,724
2022 count
Owner
State
State Highway Agency

About this bridge

I-84 (hwy 002) WB over Eagle Creek Viaduct is a steel continuous stringer/multi-beam or girder carrying I-84 (hwy 002) WB over Eagle Creek Viaduct in Multnomah County, Oregon. It was built in 1969, so it is 56 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 13,724 vehicles a day, roughly 20% of them trucks, projected to reach 17,550 by 2042. The structure is 2,752 ft (838.8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-84 (hwy 002) WB
CrossesEagle Creek Viaduct
Location007 MI E Bonneville Conn
RouteInterstate 84
CountyMultnomah County
StateOregon
Coordinates45.639, -121.9351
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans21
Design loadHS 20
Structure length2,752 ft (838.8 m)
Longest span200 ft (61 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,724 (2022)
Projected traffic17,550 by 2042
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 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 statusListed on the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$14.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-84 (hwy 002) WB over Eagle Creek Viaduct built?

It was built in 1969, making it 56 years old in 2025.

What condition is I-84 (hwy 002) WB over Eagle Creek 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 2023.

How much traffic does I-84 (hwy 002) WB over Eagle Creek Viaduct carry?

About 13,724 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is I-84 (hwy 002) WB over Eagle Creek Viaduct?

The structure is 2,752 ft (838.8 m) long with a longest span of 200 ft (61 m) and a deck 44 ft wide.

Who owns I-84 (hwy 002) WB over Eagle Creek Viaduct?

It is owned by the State Highway Agency.