Structure 11953 090400584 · Linn County, OR

Mcdowell CR RD over Mcdowell CR

Carries Mcdowell CR RD over Mcdowell CR, Mcdowell CR Park & Falls.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT116 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

116 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 tee-beam bridge.

Built196165 years old
Length116.1 ft35.4 m
Daily traffic168counted 2021
Last inspectedJune 2023every 24 months

Location

StateOregon
CountyLinn
LocationMcdowell CR Park & Falls
CarriesMcdowell CR RD
CrossesMcdowell CR
Coordinates44.46601, -122.67697

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length116.1 ft (35.4 m)
Max Span55.1 ft (16.8 m)
Deck Width20.3 ft (6.2 m)
Deck Area219.5 sq m
Main Spans1
Year Built1961

Traffic

Avg Daily Traffic168 (2021)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number11953 090400584

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.

Nearby Bridges