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SR 18 - Taylor Creek Scour Protection


January 2015

  • This project was declared operationally complete on Sept. 10, 2014. Operationally complete means the majority of work is finished and the roadway is open to traffic.

Why is WSDOT building improvements to protect the bridge at Taylor Creek from bridge scour?

WSDOT is taking action to prevent further bridge scour around the foundation of the bridge that crosses Taylor Creek on Southeast Norvydan Road.

What is bridge scour?
It is usually caused when moving water washes away soil that supports important bridge structures. A bridge can fail when enough material washes away from around its piers or abutments.

What will WSDOT do to fix it?
Crews will prevent scouring by redirecting and shielding the creek away from vital parts of the bridge by using large boulders, rocks and an engineered log jam.
Is this work critical?
Engineers have determined the bridge scour detected is not critical and does not hold an impending threat of the bridge failing. However, this work will help prevent bridge scour from becoming a critical issue in the future.

If a scour issue is left unchecked, there is a very high risk of bridge failure and collapse, which could lead to loss of life and create economic loss due to traffic closures and delays.

The End Result
This project will protect the current bridge and reduce the risk of bridge failure due to scour.

Project Benefits
This project will also improve fish habitat.

What is the project timeline?

  • March 10, 2014 - WSDOT awarded the project to Matia Contractors, Inc. The contract amount was $139,000.
  • Summer 2014 - Construction began.
  • Sept. 10, 2014 - The project was declared operationally complete.

Financial Information

The total estimated cost for this project is $312,357.00.

How can I get more information?
Mike Askarian
WSDOT Project Engineer
Phone: (206) 768-5861

Kris Olsen
WSDOT communications
Phone: 206-440-4704

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