Use of German excavation machine on Ship Canal tunnel a first for U.S.

King County is getting ready to use a shaft excavation machine that will be the first of its kind in North America. James W. Fowler Co., the general contactor, is using it to build a 30-foot diameter, 145-foot deep launching portal for a tunnel boring machine. It’s all part of a $38 million project to … Continue reading Use of German excavation machine on Ship Canal tunnel a first for U.S.