Columbia Slough

Oregon — Condition: Fair

Location

StateOregon
Coordinates45.58970, -122.68700
Features CrossedColumbia Slough
Facility CarriedHwy 091

Physical

Year Built1916
Length208.1 m
Structure Type3
OwnerState Highway Agency

Condition Ratings

OverallFair
Deck (0–9)Satisfactory (6)
Superstructure (0–9)Fair (5)
Substructure (0–9)Fair (5)

Traffic

Daily Traffic (ADT)12,202 vehicles/day

Location Map

About Bridge Condition Ratings

Bridge condition ratings are assigned by trained inspectors following Federal Highway Administration guidelines. The overall condition (Good, Fair, or Poor) is based on the lowest rating among the deck, superstructure, and substructure components. Ratings use a 0–9 scale where 9 is excellent and 0 is a failed condition. A "Poor" rating does not mean the bridge is unsafe — it indicates the bridge needs attention, may have load restrictions, or is a priority for maintenance or replacement.

About This Bridge Inspection

Bridge inspection data is collected by the Federal Highway Administration (FHWA) under the National Bridge Inspection Standards program. Bridges rated Poor (0-4) are flagged for priority maintenance or replacement.

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