Structure 8196 001 29883 · Multnomah County, OR

SW Corbett AVE over HWY 001

Carries SW Corbett AVE over HWY 001, 2.3 Mi N Of Multnomah Bvd.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT328 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 5/9 · sets the rating

328 ft end to end, longest span 96 ft: about 5 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 box-beam bridge.

Built195967 years old
Length327.8 ft99.9 m
Daily traffic—reported figure implausible
Last inspectedJanuary 2024every 24 months

Location

StateOregon
CountyMultnomah
Location2.3 Mi N Of Multnomah Bvd
CarriesSW Corbett AVE
CrossesHWY 001
Coordinates45.48909, -122.67629

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length327.8 ft (99.9 m)
Max Span96.5 ft (29.4 m)
Deck Width52.2 ft (15.9 m)
Deck Area1588.4 sq m
Main Spans5
Year Built1959

Traffic

Avg Daily Traffic109,170 (2020)
That is about 54,585 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number08196 001 29883

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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