I-101

Despite threats of a veto by Seattle Mayor Mike McGinn, the city council approved agreements today that make some city departments partners in a plan to replace the Alaskan Way Viaduct with a deep bored tunnel. Supporters say making land-use, utility and design commitments to the state moves the controversial project forward. 

The council voted 8-1 in favor of the agreements. Mike O'Brien is the sole councilman who opposed them.

WSDOT

The deal is official, but the political fight simmers. The state has put its signature on the contract to build the world's largest deep-bore tunnel, under Seattle's waterfront. It would replace the elevated Alaskan Way Viaduct, SR 99.