Structure L1439314 · Douglas County, OR

30 S 06 W 32.00: over Cow Creek

Carries 30 S 06 W 32.00: over Cow Creek, 11.6 Miles W Of I-5 (exit.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT359 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

359 ft end to end, longest span 110 ft: about 5 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.

Built195670 years old
Length358.9 ft109.4 m
Last inspectedApril 2023every 24 months

Location

StateOregon
CountyDouglas
Location11.6 Miles W Of I-5 (exit
Carries30 S 06 W 32.00:
CrossesCow Creek
Coordinates42.92389, -123.50361

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length358.9 ft (109.4 m)
Max Span109.9 ft (33.5 m)
Deck Width18.4 ft (5.6 m)
Deck Area612.6 sq m
Main Spans5
Year Built1956

Traffic

Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerBureau of Land Management
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number0000000L1439314

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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