The Alaskan Way Viaduct project is located in Seattle, Washington and includes the new State Route 99 Tunnel. This is a design-build (D/B) by the Seattle Tunnel Partners (STP) in conjunction with the Washington State Department of Transportation (WSDOT).
‘The object’: Something deep and mysterious has blocked the world’s biggest tunnel boring machine under Seattle
National Post » A secret subterranean heart, tinged with mystery and myth, [...]
