Cascadia Center December 17, 2008 Cascadia Deep Bored Tunnel To Replace Alaskan Way Viaduct – Latest Information Cascadia Center December 17, 2008 Cascadia Washington Gov. Chris Gregoire, Seattle Mayor Greg Nickels and King County Executive Ron Sims in January 2009 proposed to replace the seismically vulnerable Alaskan Way Viaduct along Seattle's downtown waterfront on State Route 99 with an inland deep bored tunnel. Legislation authorizing and providing substantial funding for the tunnel passed the state senate and house, and on May 12 was signed into law by Gov. Gregoire. The tunnel is expected to cost $1.2 to $2.2 billion, most likely $1.9 billion, including a cushion for cost overruns. The legislation provides $2.8 billion for tunnel construction and Viaduct replacement. Other, related projects - funded by the city, county and Port of Seattle - would bring the total package's cost to $4.2 billion. Here is the bill, as approved. Links to media coverage and key documents follow. Deep Bored Tunnel Bill Signed Into Law: News Round-up, 5/13/09 Tunnel FAQs, Cascadia Center House OKs SR 99 Tunnel - News & Commentary, 4/22-24/09 Yakima Valley Fruit Growers Support Deep Bore Tunnel, KIRO-AM & Seattle P-I, 4/13/09 "Deep Bore Tunnel Is Best Replacement Option," Yakima Herald-Republic, 4/12/09 99 Corridor Coalition Bored Tunnel Program Update, 3/26/09 "The Time Has Come To Replace Viaduct With Tunnel, Seattle Times, 3/26/09 "Officials Give Viaduct Replacement Details To Ballard Residents," Seattle P-I, 3/23/09 "Expert: Viaduct Bored Tunnel Would Be World Class Project," Seattle P-I, 3/20/09 "Senate Passes Bill To Replace Viaduct With Tunnel," Seattle Times, 3/4/09 SR 99 Deep Bored Tunnel Project Fact Sheets And Maps, Washington State Department Of Transportation, 2/24/09 "WSDOT: Deep Bored Tunnel Would Be Safer In Earthquake," KOMO-AM 1000, 1/31/09 WSDOT: No Comparison Between Boston's "Big Dig" And SR 99 Tunnel, Tacoma News Tribune, 1/26/09 "The Viaduct Decision's Next Step: Tolling," Crosscut, 1/20/09 Deep Bored Tunnel Chosen: Jan.13-16 Media & Govt. Links (Radio, TV, Newspapers, State of WA, more) - includes Cascadia statement More here. Read More ›