Isthmus Slough Bridge

Photos

Photo taken by Douglas Butler

BH Photo #263624

Overview: Bascule bridge over Isthmus Slough on Coos River Highway
Location: Coos Bay, Coos County, Oregon
Status: Open to traffic
History: Built 1931, East approach rebuilt 2011
Builders: - Conde B. McCullough of Redfield, South Dakota (Bridge Engineer)
- Liesch & Tofte (Contractor)
- Robert E. Grubbs (2011 - East Approach Reconstruction Engineer)
Design: Double leaf Chicago style bascule lift
Dimensions: Length of largest span: 140.0 ft.
Total length: 1,691.0 ft.
Deck width: 27.0 ft.
Also called: Newport Lane Bridge
Approximate latitude, longitude: +43.35644, -124.19395 (decimal degrees)
43°21'23" N, 124°11'38" W (degrees°minutes'seconds")
Approximate UTM coordinates: 10/403247/4801090 (zone/easting/northing)
Quadrangle map:: Coos Bay
Average daily traffic (as of 2016): 3,000
Inventory numbers: OR 01132F (Oregon Dept. of Transportation structure number)
BH 29927 (Bridgehunter.com ID)
Inspection report (as of August 2017): Overall condition: Poor
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 46.6 (out of 100)
View more at BridgeReports.com