Structure 61502000001404 · Douglas County, OR

Road over Quartz Creek

Carries Road over Quartz Creek, No Data Entered.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT75 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

75 ft end to end, longest span 50 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 rigid-frame bridge.

Built195472 years old
Length75.1 ft22.9 m
Daily traffic15counted 2006
Last inspectedOctober 2024every 24 months

Location

StateOregon
CountyDouglas
LocationNo Data Entered
CarriesRoad
CrossesQuartz Creek
Coordinates43.07824, -122.65507

Physical Characteristics

MaterialConcrete Continuous
DesignFrame
Total Length75.1 ft (22.9 m)
Max Span49.9 ft (15.2 m)
Deck Width28.5 ft (8.7 m)
Deck Area199.2 sq m
Main Spans3
Year Built1954

Traffic

Avg Daily Traffic15 (2006)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number061502000001404

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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