Structure 39C623614000220 · Lane County, OR

Laduke Road over Gray Creek

Carries Laduke Road over Gray Creek, 022 Mi South Hyway 58.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

56 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.

Built198046 years old
Length56.1 ft17.1 m
Daily traffic179counted 2020
Last inspectedOctober 2024every 24 months

Location

StateOregon
CountyLane
Location022 Mi South Hyway 58
CarriesLaduke Road
CrossesGray Creek
Coordinates43.74042, -122.50444

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length56.1 ft (17.1 m)
Max Span55.1 ft (16.8 m)
Deck Width27.9 ft (8.5 m)
Deck Area145.3 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic179 (2020)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number39C623614000220

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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