
PORT OF SEATTLE
MEMORANDUM
COMMISSION AGENDA-POLICY & STAFF BRIEFING
DATE: January 22, 2009
TO: Tay Yoshitani, Chief Executive Officer
FROM: Kurt Beckett, Director, External Affairs
Geri Poor, Regional Transportation Manager
SUBJECT: Alaskan Way Viaduct/Seawall Replacement Project
BACKGROUND
In March 2007, the Governor, Mayor and County Executive announced a Collaborative Process to
pursue the solution for the Viaduct’s central waterfront. Guided by six principles, they evaluated eight
scenarios, with multiple components such as investments in the SR99 corridor, city streets, Interstate 5,
transit and demand management strategies. On Tuesday, January 13
th
, the elected leadership announced
the selection of a Bored Tunnel Hybrid alternative, and the potential for Port of Seattle participation.
TODAY’S BRIEFING
At today’s briefing, Port staff will present an update on project benefits and issues for the Port of Seattle.
PREVIOUS COMMISSION REVIEW
After the March 2007 announcement of the Collaborative Process, the Port CEO voiced our business
interests to the Mayor, the Governor and the County Executive. Maintaining system capacity, freight
mobility, access to waterfront businesses and the seawall’s function are critical to the Port. As
important, construction must be planned to mitigate impacts and support Port tenants and other private
businesses.
In August 2007, the Commission reviewed and commented on the six Moving Forward projects and an
overview of the central waterfront Collaborative Process.
In August 2008, the agencies’ presented the guiding principles and measures and the eight scenarios for
Commission review and discussion. In advance and in response, Port staff summarized the discussions
between the project team and the Port, including the Commission’s consistent statements about our
overarching tenets to maintain or enhance: system functionality, complementary system upgrades,
freight mobility, access to Port and other waterfront properties (including provision for growth in
business activity) and the seawall’s function. These tenets must be measured both for the final design
concept and for its construction impacts.