Structure 17320 001 25628 · Marion County, OR

I-5 (hwy 1) over Market Street

Carries I-5 (hwy 1) over Market Street, In Salem.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT350 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

350 ft end to end, longest span 190 ft: about 5 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 box-beam bridge.

Built199630 years old
Length350.1 ft106.7 m
Daily traffic101,583counted 2022
Last inspectedDecember 2023every 24 months

Location

StateOregon
CountyMarion
LocationIn Salem
CarriesI-5 (hwy 1)
CrossesMarket Street
Coordinates44.95015, -122.99027

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length350.1 ft (106.7 m)
Max Span190.0 ft (57.9 m)
Deck Width148.6 ft (45.3 m)
Deck Area4833.5 sq m
Main Spans3
Year Built1996

Traffic

Avg Daily Traffic101,583 (2022)
Truck Traffic13%
Lanes On Bridge6
Lanes Under Bridge7

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number17320 001 25628

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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