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I-5 - Blakeslee Junction to Grand Mound - Project Specifics

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Public involvement

Your thoughts and opinions are important to us. Three public open houses were held in 2006 to solicit feedback from the public. On March 7, WSDOT introduced the project to the public and asked for ideas and suggestions. The May 9 open house focused on issues and options at the Mellen Street interchange. On December 5, WSDOT provided an update on the project, presented proposed improvements to I-5 as it is widened between Mellen Street and Grand Mound, and asked for comments from the public on alternatives to improve the Mellen Street interchange.

Public involvement efforts related to this project first began in 1992, when WSDOT started work on the I-5, Toutle Park Road to Maytown Environmental Impact Statement (EIS). Multiple open houses and public meetings were held in August 1992, April 1994 and January 1997 as part of the development of the EIS. The project did not move forward at the time due to a lack of funding at the state level.

For the latest public involvement meetings in southwest Washington, visit the Southwest Region's Public Involvement page

Increasing safety is our priority

Widening I-5 in this area will address and improve growing safety concerns as traffic levels increase on this section of I-5.

Environmental protection

WSDOT makes every effort to assess and minimize environmental impacts from our projects. WSDOT completed an Environmental Impact Statement (EIS) for the I-5 between Toutle Park Road in Cowlitz County and Maytown in Thurston County in 2003. This EIS evaluated alternatives for widening this section of I-5 to a six-lane divided highway; improving, widening or replacing various interchanges, bridges and overcrossings in the area; relocating frontage roads; and other improvements.

In addition, specific environmental impacts related to construction will be analyzed and, if necessary, WSDOT will develop an appropriate plan for mitigation of impacts as part of its usual environmental documentation and permitting processes.

For environmental information specific to this project, please contact Barb Aberle at (360) 905-2186, or e-mail

Will this project impact tribal resources? 

At WSDOT we seek to address the concerns of the tribal nations using the process outlined in Section 106 of the National Historic Preservation Act and the WSDOT Tribal Consultation Policy adopted in 2003 by the Transportation Commission as part of the WSDOT Centennial Accord Plan.

WSDOT has initiated consultation with appropriate tribal governments and will continue to consult with the tribes throughout the process.

For more information visit our WSDOT Tribal Liaison website.