Structure 8588B002 00002 · Multnomah County, OR

WB Con To HWY 1 SB over HWY 1

Carries WB Con To HWY 1 SB over HWY 1, 0.1 Mi E Portland Cc.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,419 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

1,419 ft end to end, longest span 135 ft: about 3.9 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.

Built196363 years old
Length1419.0 ft432.5 m
Daily traffic76,816counted 2022
Last inspectedApril 2023every 24 months

Location

StateOregon
CountyMultnomah
Location0.1 Mi E Portland Cc
CarriesWB Con To HWY 1 SB
CrossesHWY 1
Coordinates45.52429, -122.66543

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1419.0 ft (432.5 m)
Max Span134.8 ft (41.1 m)
Deck Width37.1 ft (11.3 m)
Deck Area4887.2 sq m
Main Spans12
Year Built1963

Traffic

Avg Daily Traffic76,816 (2022)
Truck Traffic7%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number08588B002 00002

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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