As King County Executive Dow Constantine, left, looks on Gov. Chris Gregoire addresses a news conference about replacement of the Alaskan Way Viaduct, Thursday, March 31, 2011, in Seattle. Gregoire ... more 
As King County Executive Dow Constantine, left, looks on Gov. Chris Gregoire addresses a news conference about replacement of the Alaskan Way Viaduct, Thursday, March 31, 2011, in Seattle. Gregoire says the state is joining the effort to block a vote on the highway replacement with a tunnel. The group "Protect Seattle Now" has turned in 29,000 signatures seeking to force a vote, fearing city taxpayers would be stuck with any cost overruns. less 
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Associated Press | Photo By Elaine Thompson
Thu, Mar 31, 2011 5:05 PM EDT