Structure 6683 01WX00036 · Multnomah County, OR

HWY 1w (steel Br) over Willamette River

Carries HWY 1w (steel Br) over Willamette River, 0.4 Mi NE Portland Cc.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT785 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

785 ft end to end: about 2.2 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 through truss.

Built1910116 years old
Length785.1 ft239.3 m
Daily traffic11,732counted 2022
Last inspectedAugust 2023every 24 months

Location

StateOregon
CountyMultnomah
Location0.4 Mi NE Portland Cc
CarriesHWY 1w (steel Br)
CrossesWillamette River
Coordinates45.52762, -122.66907

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length785.1 ft (239.3 m)
Max Span288.1 ft (87.8 m)
Deck Width64.0 ft (19.5 m)
Deck Area4666.4 sq m
Main Spans1
Year Built1910

Traffic

Avg Daily Traffic11,732 (2022)
Truck Traffic10%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerRailroad
Historical SignificanceBridge is eligible for the National Register
Scour CriticalUnknown
Structure Number06683 01WX00036

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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