The Seattle City Council expects to learn more Monday about the extent of problems from the attempt to repair the machine that broke down while boring a highway tunnel under the city.
Settling soil has caused a contractor building the Highway 99 tunnel beneath downtown Seattle to stop work on a pit being dug to reach a stalled digging machine known as Bertha, the state said.
The new tunnel would allow workers to dig up and repair the now-stuck boring machine
A routine inspection was conducted the weekend of March 1-2 and discovered new and widening cracks near Spring and Seneca streets.
The Alaskan Way Viaduct has sunk nearly half-an-inch at one location where a machine has been boring a highway tunnel under downtown Seattle.
A local pest control company says it’s seeing an increase in business because of the Highway 99 tunnel project as rats are sent scurrying from their hiding places.
The world’s largest tunneling machine is sinking its teeth into the soil under downtown Seattle.
The world’s widest tunnel boring machine arrives in Seattle in pieces Tuesday aboard a ship from Japan.