The following step-by-step guide explains how we are developing a solution for the viaduct’s central waterfront section. We encourage you to view a five minute narrated presentation (requires Windows Media Player) that explains how these steps will lead to a final central waterfront recommendation in December 2008.
This information has been presented to our Stakeholder Advisory Committee, which began meeting in December 2007. The committee is made up of 30 individuals that represent communities, economic interests and cause-driven organizations. They provide feedback on potential solutions as officials develop a final recommendation. Visit the Library for a complete list of materials presented to Stakeholder Advisory Committee members.
Return to central waterfront.
|
|
Presentations |
Handouts |
|
Step 1: Guiding Principles
WSDOT, King County and the City of Seattle began in December 2007 by developing and agreeing to a set of guiding principles that define goals for any central waterfront solution. |
None. |
Guiding Principles (pdf 34 kb) |
|
Step 2: Measures
Measures provide a consistent way to evaluate various central waterfront options against the guiding principles. |
None. |
Revised Central Waterfront Measures (pdf 50 kb)
Comments on Measures and Responses (pdf 114 kb)
|
|
Step 3: Building Blocks
From January through April, we developed building blocks, or strategies for keeping people and goods moving, in five different categories – surface streets, Interstate 5, transit, transportation policies and management, and State Route 99 replacements. |
I-5 Reconstruction Projects (pdf 1.2 Mb)
Policies and Management (pdf 2 Mb)
SR 99 Building Blocks - Part I (pdf 4.3 Mb) Part II (pdf 5.3 Mb)
Surface Street Building Block Elements (pdf 2.5 Mb)
Transit Strategies (pdf 930 kb)
|
Complete List of Potential Building Blocks (pdf 102 kb)
I-5 and Surface Streets Building Blocks (pdf 48 kb)
SR 99 Building Blocks (pdf 34 kb)
Transportation Policies and Management Building Blocks (pdf 49 kb)
Transit Building Blocks (pdf 60 kb)
|
|
Step 4: Grouping Building Blocks into Scenarios
In June, the agencies grouped the most promising building blocks into several scenarios, or comprehensive solutions, for the central waterfront. |
Scenarios Introduction (pdf 2.1 Mb) |
Summary Comparison of Potential Scenarios (pdf 189 kb)
Scenario A: Demand management/low capital (pdf 4.2 Mb)
Scenario B: Surface boulevard (pdf 4.2 Mb)
Scenario C: Alaskan Way/Western Avenue couplet (pdf 1.2 Mb)
Scenario D: Four-lane elevated (pdf 1.2 Mb)
Scenario E: Four-lane integrated elevated (pdf 857 kb)
Scenario F: Four-lane bored tunnel (pdf 1.9 Mb)
Scenario G: Four-lane cut and cover tunnel (pdf 1.3 Mb)
Scenario H: Four-lane lidded trench (pdf 1.3 Mb) |
|
Step 5: Scenario Evaluation
Through the summer and fall, the agencies will evaluate scenarios and gather input from the Stakeholder Advisory Committee and the public. |
Improve public safety - Measure 1 - seismic performance, Fiscal responsibility - Measure 3 - design life (pdf 99 kb)
Enhance Seattle's waterfront - Measure 3 - shadowing and view blocking (pdf 101 kb)
Enhance Seattle's waterfront - Measure 6 - waterfront transit access (pdf 587 kb)
Enhance Seattle's waterfront - Measure 7 - historic structures (pdf 98 kb)
Health of the environment - Measure 3 - stormwater runoff (pdf 98 kb)
Health of the environment - Measure 4 - near-shore habitats (pdf 526 kb)
Guiding Principle 2 Travel model results presentation (pdf 374 kb) |
Guiding principles and evaluation measures schedule of results (pdf 40 kb)
Scenario evaluation results matrix (pdf 80 kb)
Key evaluation findings - September 2008 (pdf 70 kb)
Guiding Principle 2 Travel modeling analysis handout (pdf 2.2 Mb) |
|
Step 6: Final Recommendation
The Governor, County Executive and Mayor will make their final recommendation for a central waterfront solution in December 2008. |
|
|