Structure 25B13 000 00147 · Multnomah County, OR

N Greeley AVE over B-13 Over N Going ST

Carries N Greeley AVE over B-13 Over N Going ST, On Swan Island Ramp.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT111 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 6/9 · sets the rating

111 ft end to end. Lengths and the car 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.

Built197650 years old
Length110.9 ft33.8 m
Daily traffic30,163counted 2020
Last inspectedJuly 2024every 24 months

Location

StateOregon
CountyMultnomah
LocationOn Swan Island Ramp
CarriesN Greeley AVE
CrossesB-13 Over N Going ST
Coordinates45.55606, -122.69276

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length110.9 ft (33.8 m)
Max Span108.9 ft (33.2 m)
Deck Width86.3 ft (26.3 m)
Deck Area888.9 sq m
Main Spans1
Year Built1976

Traffic

Avg Daily Traffic30,163 (2020)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number25B13 000 00147

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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