Structure 2063 002 04155 · Multnomah County, OR

I-84 (hwy 002) EB over Eagle Creek

Carries I-84 (hwy 002) EB over Eagle Creek, 2.0 Mi W Cascade Locks.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT466 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

466 ft end to end, longest span 142 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built196957 years old
Length465.9 ft142 m
Daily traffic13,724counted 2022
Last inspectedJuly 2023every 24 months

Location

StateOregon
CountyMultnomah
Location2.0 Mi W Cascade Locks
CarriesI-84 (hwy 002) EB
CrossesEagle Creek
Coordinates45.64036, -121.93083

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length465.9 ft (142 m)
Max Span142.1 ft (43.3 m)
Deck Width43.6 ft (13.3 m)
Deck Area1888.6 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic13,724 (2022)
Truck Traffic20%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number02063 002 04155

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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