PRR laid the bedrock for action on I-405 by working with the Washington State Department of Transportation (WSDOT) to build a landmark interjurisdictional and community consensus on a Master Plan for the I-405 Corridor. The subsequent strong public and political support has led to $1.5 Billion in new funds adopted through 2 major legislative actions and one major public vote.

Today, the I-405 Congestion Relief and Bus Rapid Transit Projects is delivering ahead of schedule and under budget on a range of multi-modal transportation investments. The I-405 improvement projects are being constructed using a design-build (D-B) contracting approach. PRR is integrated with WSDOT's communications personnel in managing the contractor's outreach throughout the D-B phase.

PRR continues to maintain a high level of communications continuity for nine major construction segments through five jurisdictions, troubleshooting and maintaining a high level of public involvement on project design and planning. For each I-405 improvement segment, PRR supports the NEPA/SEPA Environmental Assessment (EA) process; environmental justice outreach; corridor-wide context sensitive solutions (CSS); transportation demand management (TDM) planning; managed lanes (HOT lanes) research and close communications coordination with other projects in the corridor.