Structure 39C249264500659 · Lane County, OR

Gowydyville Road over S. Fk. Siuslaw River

Carries Gowydyville Road over S. Fk. Siuslaw River, 075 Mi W Cottage Grove.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT59 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

59 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 slab bridge.

Built198442 years old
Length59.1 ft18 m
Daily traffic535counted 2020
Last inspectedSeptember 2024every 24 months

Location

StateOregon
CountyLane
Location075 Mi W Cottage Grove
CarriesGowydyville Road
CrossesS. Fk. Siuslaw River
Coordinates43.78448, -123.18918

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length59.1 ft (18 m)
Max Span57.1 ft (17.4 m)
Deck Width27.9 ft (8.5 m)
Deck Area153 sq m
Main Spans1
Year Built1984

Traffic

Avg Daily Traffic535 (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 Number39C249264500659

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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