Structure 8117 001C24214 · Marion County, OR

I-5 (hwy 1) Conn. over Chehulpum

Carries I-5 (hwy 1) Conn. over Chehulpum, 079 Mi N Of Albany.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

38 ft end to end, longest span 26 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.

Built195769 years old
Length38.1 ft11.6 m
Daily traffic962counted 2022
Last inspectedDecember 2023every 24 months

Location

StateOregon
CountyMarion
Location079 Mi N Of Albany
CarriesI-5 (hwy 1) Conn.
CrossesChehulpum
Coordinates44.75806, -123.04669

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length38.1 ft (11.6 m)
Max Span25.9 ft (7.9 m)
Deck Width33.1 ft (10.1 m)
Deck Area117.2 sq m
Main Spans3
Year Built1957

Traffic

Avg Daily Traffic962 (2022)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number08117 001C24214

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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