Structure 8590Y001C30068 · Multnomah County, OR

I-5 (hwy 001) Con over City Streets/omsi

Carries I-5 (hwy 001) Con over City Streets/omsi, E. Bank Of Willamette R..

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT622 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

622 ft end to end, longest span 93 ft: about 1.7 football fields. 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.

Built199234 years old
Length622.0 ft189.6 m
Daily traffic42,700counted 2022
Last inspectedFebruary 2023every 24 months

Location

StateOregon
CountyMultnomah
LocationE. Bank Of Willamette R.
CarriesI-5 (hwy 001) Con
CrossesCity Streets/omsi
Coordinates45.51269, -122.66742

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length622.0 ft (189.6 m)
Max Span92.8 ft (28.3 m)
Deck Width37.1 ft (11.3 m)
Deck Area2142.5 sq m
Main Spans7
Year Built1992

Traffic

Avg Daily Traffic42,700 (2022)
Truck Traffic10%
Lanes On Bridge2
Lanes Under Bridge9

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number08590Y001C30068

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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