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General Information, Schedule, Photographs

This is a photograph of the demolition of Johnson Bridge.

General Information

About the Project

Due to the age and design defects of Johnson Bridge, it began to deteriorate and vertical stress fractures became visible.  After an inspection by ODOT engineers, it was determined that the bridge should be load limited and eventually replaced.   The county posted the bridge for weight restrictions allowing loads up to 45,000 lbs (depending on axle-weight spacing) and continuously monitored the stress fractures.  In 2003, the county applied for funding through the OTIA Bridge Fund and received funding to replace six bridges within the county.  Johnson Bridge is the last in this series to be replaced.  The replacement of Johnson Bridge is important for commercial and safety reasons.  It re-directs heavy loads through an industrial route that bypasses the city of Tillamook and services as a route for emergency vehicles.

Project Administration

Owner:  Tillamook County

Contractor:  Concrete Enterprises, Inc.

Design Firm Inspectors:  OBEC Consulting Engineers

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Schedule

4/9/08 - Pre-Construction Meeting

4/10/08 - News Release for the Closure of Johnson Bridge

4/21/08 - Bridge Closure

4/21/08 to 7/21/08 - Bridge Removal

7/1/08 to 9/15/08 - In-Water Work Period

6/1/09 - Completion of Bridge Decking

7/1/09 to 8/31/09 - Clean-up; Planting and Seeding

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Photographs

July-Dec 2008 Updated Photos.  Photo 1, Photo 2, Photo 3, Photo 4, Photo 5, Photo 6, Photo 7, Photo 8, Photo 9, Photo 10 ,Photo 11, Photo 12, Photo 13,

5/?/08 - Demolition of Johnson Bridge.  Photo 1, Photo 2

4/24/08 - Utility work being done after closure.  Photo 1, Photo 2

4/24/08 - Johnson Bridge closed.  Photo

4/15/08 - Johnson Bridge before closure.  Photo

10/30/07 - Weight restriction signage for Johnson Bridge.  Photo

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Last Updated: Thursday, August 26, 2010 11:36 AM

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