Structure 17351 001 24135 · Marion County, OR

I-5 (hwy 1) NB over Santiam Overflow No. 2

Carries I-5 (hwy 1) NB over Santiam Overflow No. 2, 7.2 Mi N Of Albany.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT234 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

234 ft end to end, longest span 39 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built199432 years old
Length233.9 ft71.3 m
Daily traffic33,486counted 2022
Last inspectedFebruary 2023every 24 months

Location

StateOregon
CountyMarion
Location7.2 Mi N Of Albany
CarriesI-5 (hwy 1) NB
CrossesSantiam Overflow No. 2
Coordinates44.74674, -123.05155

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length233.9 ft (71.3 m)
Max Span39.0 ft (11.9 m)
Deck Width62.7 ft (19.1 m)
Deck Area1361.8 sq m
Main Spans6
Year Built1994

Traffic

Avg Daily Traffic33,486 (2022)
Truck Traffic15%
Lanes On Bridge3

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number17351 001 24135

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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