The machine named “Bertha” is only one-tenth of the way toward completing a 1.7-mile tunnel. The tunnel will carry Highway 99 traffic and allow the removal of the aging Alaskan Way Viaduct along the Seattle waterfront.
On Friday the state Department of Transportation said inspections conducted last month found that many of the cutterhead openings were clogged with dirt and other things. Officials say they also discovered the seal system protecting Bertha’s main bearing was damaged.
It’s still unclear when Bertha can begin tunneling operations again. The machine has been mostly idle for two months.
More Northwest Headlines
Assaults on staff at state psych hospital costing millions Everett man, 52, dies of natural causes in Skagit County jail Seattle Black Lives Matter protest draws hundreds Polar bear at Tacoma zoo dies; suffered from liver cancer Yakima might hire outside investigator for city employees Fleeing burglary suspect jumps in Puyallup River Farm recalls produce used in Costco salad linked to E. coli Oregon firefighters rescue owl tangled in fishing line
Our new comment system is not supported in IE 7. Please upgrade your browser here.