There are four projects in the SR 520 Bridge Replacement and HOV Program. Each project has its own design and environmental process.
Timeline highlights of the SR 520 Bridge Replacement and HOV Program
- 2010 - Complete innovative pontoon construction testing effort.
- 2010 - Activate Smarter Highways traffic management features.
- 2010 - Begin new pontoon site construction in Grays Harbor.
- 2011 - Begin tolling the existing bridge.
- 2012 - Begin construction of new floating bridge.
- 2014 - Open new floating bridge to drivers.
The schedule for constructing the other segments of the corridor is pending additional funding.
I-5 to Medina: Bridge Replacement and HOV Project
Medina to SR 202: Eastside Transit and HOV Project
- 2008 - Conduct environmental scoping.
- 2009 - Issue environmental assessment.
- 2010 - Complete environmental process.
- 2010 - Receive permits.
- 2010 - Begin construction (pending funding).
Pontoon Construction Project
- 2009 - Indentify preferred pontoon construction site.
- 2009 - Public and agency scoping phase.
- 2009 - Begin innovative pontoon construction testing.
- 2010 - Publish draft environmental impact statement.
- 2010 - Issue final environmental impact statement.
- 2010 - Receive Record of Decision from FHWA.
- 2010 - Begin pontoon construction at existing site.
- 2010 - Begin construction of new casting basin in Grays Harbor.
- 2012 - Pontoon construction at new site begins.
Lake Washington Congestion Management Project
- 2009 - Variable tolling environmental assessment - issued June 5.
- 2011 - Variable tolling operational.