Structure 6009A028 · Marion County, OR

Mill CR RD over Mill Creek

Carries Mill CR RD over Mill Creek, 00.3 East Of Marion RD.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT111 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 5/9 · sets the rating

111 ft end to end, longest span 27 ft. 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 slab bridge.

Built195571 years old
Length110.9 ft33.8 m
Daily traffic5,800counted 2018
Last inspectedAugust 2024every 24 months

Location

StateOregon
CountyMarion
Location00.3 East Of Marion RD
CarriesMill CR RD
CrossesMill Creek
Coordinates44.83885, -122.93040

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length110.9 ft (33.8 m)
Max Span26.9 ft (8.2 m)
Deck Width28.9 ft (8.8 m)
Deck Area297.4 sq m
Main Spans4
Year Built1955

Traffic

Avg Daily Traffic5,800 (2018)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalUnknown
Structure Number06009A028

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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