Structure 2733C01WX00014 · Multnomah County, OR

HWY 91 NB over Front AVE To Steel Br

Carries HWY 91 NB over Front AVE To Steel Br, At W End Of Steel Bridge.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT562 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

562 ft end to end, longest span 91 ft: about 1.6 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 tee-beam bridge.

Built195076 years old
Length561.7 ft171.2 m
Daily traffic5,866counted 2022
Last inspectedNovember 2024every 24 months

Location

StateOregon
CountyMultnomah
LocationAt W End Of Steel Bridge
CarriesHWY 91 NB
CrossesFront AVE To Steel Br
Coordinates45.52619, -122.67068

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length561.7 ft (171.2 m)
Max Span91.2 ft (27.8 m)
Deck Width33.8 ft (10.3 m)
Deck Area1763.4 sq m
Main Spans10
Year Built1950

Traffic

Avg Daily Traffic5,866 (2022)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number02733C01WX00014

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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