Structure 7864A001 17384 · Lane County, OR

I-5 (hwy 001) over 16th St.

Carries I-5 (hwy 001) over 16th St., Cottage Grove.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT110 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

110 ft end to end, longest span 46 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 tee-beam bridge.

Built1956rebuilt 1963
Length109.9 ft33.5 m
Daily traffic37,910counted 2022
Last inspectedMay 2024every 24 months

Location

StateOregon
CountyLane
LocationCottage Grove
CarriesI-5 (hwy 001)
Crosses16th St.
Coordinates43.79271, -123.05080

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length109.9 ft (33.5 m)
Max Span45.9 ft (14 m)
Deck Width86.0 ft (26.2 m)
Deck Area877.7 sq m
Main Spans3
Year Built1956 (reconstructed 1963)

Traffic

Avg Daily Traffic37,910 (2022)
Truck Traffic26%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number07864A001 17384

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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