Isthmus Slough Bridge

Facts 

Overview

Bascule bridge over Isthmus Slough on HWY 241

Location

Coos Bay, Coos County, Oregon

Status

Open to traffic

History

Built 1931

Builder

- Liesch & Tofte

Design

Bascule Lift

Dimensions

Length of largest span: 140.0 ft.
Total length: 1,691.0 ft.
Deck width: 27.0 ft.

Inventory number

BH 29927 (Bridgehunter.com ID)

Inspection (as of 02/2008)

Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Serious (3 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 2.0 (out of 100)

Average daily traffic (as of 2006)

9,200

Categories 

Update Log 

• July 30, 2008: New photo from Michael Goff
• June 12, 2008: Updated by Michael Goff

Sources 

• Michael Goff - michael [dot] goff [at] odot [dot] state [dot] or [dot] us
• Isthmus Slough Bridge HAER Webpage

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