Structure L1439166 · Douglas County, OR

32 S 08 W 01.01: over West Fork Cow Creek

Carries 32 S 08 W 01.01: over West Fork Cow Creek, 8.6 Miles W Of Cow Creek.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT195 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

195 ft end to end, longest span 96 ft: about 3 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 multi-beam bridge.

Built197254 years old
Length194.9 ft59.4 m
Daily traffic50counted 2023
Last inspectedApril 2023every 24 months

Location

StateOregon
CountyDouglas
Location8.6 Miles W Of Cow Creek
Carries32 S 08 W 01.01:
CrossesWest Fork Cow Creek
Coordinates42.82972, -123.71750

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length194.9 ft (59.4 m)
Max Span96.1 ft (29.3 m)
Deck Width16.7 ft (5.1 m)
Deck Area302.9 sq m
Main Spans2
Year Built1972

Traffic

Avg Daily Traffic50 (2023)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerBureau of Land Management
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number0000000L1439166

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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