Structure 9156 061C00060 · Multnomah County, OR

Conn 8(5th Onramp) over HWY 61

Carries Conn 8(5th Onramp) over HWY 61, 0.2 Mi S Of SW Park.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT279 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

279 ft end to end, longest span 112 ft: about 4 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 box-beam bridge.

Built196462 years old
Length279.2 ft85.1 m
Daily traffic1,260counted 2022
Last inspectedJuly 2023every 24 months

Location

StateOregon
CountyMultnomah
Location0.2 Mi S Of SW Park
CarriesConn 8(5th Onramp)
CrossesHWY 61
Coordinates45.50736, -122.68359

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length279.2 ft (85.1 m)
Max Span111.5 ft (34 m)
Deck Width26.9 ft (8.2 m)
Deck Area697.8 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic1,260 (2022)
Truck Traffic9%
Lanes On Bridge1
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number09156 061C00060

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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