Structure 6757 000000000 · Multnomah County, OR

Broadway ST over Willamette River

Carries Broadway ST over Willamette River, Willamette River Mp 11.7.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
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 FT1,742 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

1,742 ft end to end: about 4.8 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 bascule bridge (drawn closed).

Built1912rebuilt 1927
Length1742.1 ft531 m
Daily traffic30,871counted 2020
Last inspectedJuly 2023every 24 months

Location

StateOregon
CountyMultnomah
LocationWillamette River Mp 11.7
CarriesBroadway ST
CrossesWillamette River
Coordinates45.53155, -122.67469

Physical Characteristics

MaterialSteel
DesignMovable - Bascule
Total Length1742.1 ft (531 m)
Max Span304.1 ft (92.7 m)
Deck Width70.5 ft (21.5 m)
Deck Area11416.5 sq m
Main Spans1
Year Built1912 (reconstructed 1927)

Traffic

Avg Daily Traffic30,871 (2020)
Truck Traffic10%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical3 — Scour critical
Structure Number06757 000000000

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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