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US 12 - Widening from SR 124 to Walla Walla - Project Details

Public Involvement
WSDOT held an open house to discuss Phases 7 & 8 in January 2008 at Touchet School.

An open house to discuss the plans for the Burbank Interchange project was held in October 2006 at the Columbia Middle School.

An open house to discuss Phase 6 of this project was held in June 2006 at the Walla Walla Airport.

Two informational open houses were held in Burbank and Walla Walla in May of 2005.


Your thoughts and opinions are important to us. Contact the project office for more detailed project information.


Environmental Protection
Mitigation elements of this project include:

• The creation of a new 24-acre wetland mitigation pond.
• A new and improved recreational boat launch, parking area, and public access road.
• Opening approximately 100 acres of previously unavailable aquatic habitat to seven species protected by the Endangered Species Act, which provides an opportunity for ecological connectivity across US 12 between the McNary Refuge and the Two Rivers Peninsula Habitat Management Unit.
• The construction of approximately 3000 feet of undulating near-shore riparian zone.

The first phase of this corridor improvement project, McNary Pool to Attalia Vicinity, crossed the most environmentally sensitive area and completed all the required mitigation for the entire corridor. The planning study for the Wallula Junction to Walla Walla portion will assess environmental impacts and develop the appropriate environmental documentation.

Please visit the WSDOT Environmental Services Web site for more information. 


Increasing safety is one of our priorities

Commercial trucks make up as much as 33% of the traffic stream, causing slowdowns and safety concerns. Reconstructing US 12 as a four-lane divided highway will greatly increase maneuverability and safety. The present value of safety benefits over 20 years is estimated to be $14.7 million.


Will this project impact tribal resources?
WSDOT works with tribal officials to identify and minimize adverse impacts to areas of cultural, archeological or anthropological significance. When applicable, we 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.

For this twelve mile corridor, WSDOT will consult with the Confederated Tribes of the Colville Reservation, the Confederated Tribes of the Umatilla Reservation, the Yakama Nation, the Wanapum Tribe, and the Nez Perce Tribe through the formal consultation process of Section 106 of the National Historic Preservation Act.

For more information visit our WSDOT Tribal Liaison Web site.