Structure 43B001000000000 · Linn County, OR

Ash ST over Santiam-albany Canal

Carries Ash ST over Santiam-albany Canal, 550 E. Ash Street.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 6/9 · sets the rating

58 ft end to end, longest span 29 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.

Built197254 years old
Length58.1 ft17.7 m
Daily traffic618counted 2021
Last inspectedJuly 2023every 24 months

Location

StateOregon
CountyLinn
Location550 E. Ash Street
CarriesAsh ST
CrossesSantiam-albany Canal
Coordinates44.54009, -122.89911

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length58.1 ft (17.7 m)
Max Span28.9 ft (8.8 m)
Deck Width44.0 ft (13.4 m)
Deck Area237.2 sq m
Main Spans2
Year Built1972

Traffic

Avg Daily Traffic618 (2021)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number43B001000000000

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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