Structure 6683A01WX00031 · Multnomah County, OR

HWY 1w/glisan Ramp over Front AVE & Uprr

Carries HWY 1w/glisan Ramp over Front AVE & Uprr, At NW End Of Steel Br..

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT505 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

505 ft end to end, longest span 102 ft: about 7 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 girder bridge.

Built1950rebuilt 1985
Length504.9 ft153.9 m
Daily traffic2,630counted 2022
Last inspectedAugust 2023every 24 months

Location

StateOregon
CountyMultnomah
LocationAt NW End Of Steel Br.
CarriesHWY 1w/glisan Ramp
CrossesFront AVE & Uprr
Coordinates45.52682, -122.67173

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length504.9 ft (153.9 m)
Max Span102.0 ft (31.1 m)
Deck Width56.1 ft (17.1 m)
Deck Area2631.7 sq m
Main Spans9
Year Built1950 (reconstructed 1985)

Traffic

Avg Daily Traffic2,630 (2022)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number06683A01WX00031

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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