Structure 827A01W 05633 · Polk County, OR

Or 99w (hwy 91) over Baskett Slough

Carries Or 99w (hwy 91) over Baskett Slough, 065 Mi N Monmouth.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

41 ft end to end, longest span 21 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.

Built1923rebuilt 1960
Length41.3 ft12.6 m
Daily traffic12,985counted 2022
Last inspectedApril 2023every 24 months

Location

StateOregon
CountyPolk
Location065 Mi N Monmouth
CarriesOr 99w (hwy 91)
CrossesBaskett Slough
Coordinates44.95075, -123.22855

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length41.3 ft (12.6 m)
Max Span20.7 ft (6.3 m)
Deck Width44.9 ft (13.7 m)
Deck Area172.6 sq m
Main Spans2
Year Built1923 (reconstructed 1960)

Traffic

Avg Daily Traffic12,985 (2022)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number00827A01W 05633

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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