Structure 6580 001 00284 · Clackamas County, OR

Lusted RD over Sandy River

Carries Lusted RD over Sandy River, 2 Mi S Of County Line.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT304 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

304 ft end to end: 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 through truss.

Built1926100 years old
Length304.1 ft92.7 m
Daily traffic16,064counted 2022
Last inspectedOctober 2024every 12 months

Location

StateOregon
CountyClackamas
Location2 Mi S Of County Line
CarriesLusted RD
CrossesSandy River
Coordinates45.44493, -122.25364

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length304.1 ft (92.7 m)
Max Span299.9 ft (91.4 m)
Deck Width31.2 ft (9.5 m)
Deck Area880.6 sq m
Main Spans1
Year Built1926

Traffic

Avg Daily Traffic16,064 (2022)
Truck Traffic32%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number06580 001 00284

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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