Structure 45C609079300996 · Malheur County, OR

Danner C-793 over Cow Creek

Carries Danner C-793 over Cow Creek, 3 Mi W Charbonneau Grave.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT80 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

80 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 through truss.

Built1924rebuilt 2000
Length80.1 ft24.4 m
Daily traffic62counted 2020
Last inspectedSeptember 2024every 12 months

Location

StateOregon
CountyMalheur
Location3 Mi W Charbonneau Grave
CarriesDanner C-793
CrossesCow Creek
Coordinates42.94912, -117.34291

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length80.1 ft (24.4 m)
Max Span79.1 ft (24.1 m)
Deck Width14.1 ft (4.3 m)
Deck Area104.9 sq m
Main Spans1
Year Built1924 (reconstructed 2000)

Traffic

Avg Daily Traffic62 (2020)
Truck Traffic5%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalUnknown
Structure Number45C609079300996

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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