Structure 39C247264500004 · Lane County, OR

Gowdyville Road over Silk Creek

Carries Gowdyville Road over Silk Creek, 012 Mi W HWY 99.

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 FT72 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

72 ft end to end, longest span 28 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 slab bridge.

Built196957 years old
Length71.9 ft21.9 m
Daily traffic1,294counted 2020
Last inspectedSeptember 2024every 24 months

Location

StateOregon
CountyLane
Location012 Mi W HWY 99
CarriesGowdyville Road
CrossesSilk Creek
Coordinates43.79609, -123.08253

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length71.9 ft (21.9 m)
Max Span27.9 ft (8.5 m)
Deck Width32.2 ft (9.8 m)
Deck Area214.6 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic1,294 (2020)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number39C247264500004

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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