Augers, tubes and a crane are standing by at the Highway 99 tunnel job site, to help workers drill 60 feet deep and remove the unidentified buried object that blocks boring machine Bertha. The job is ...

We've covered the saga of the SR99 tunneling machine, better known as Bertha, since it broke down after only drilling though just 52 feet in three days of operation. Now the Seattle tunnel boring ...

Bertha’s end could be near. The world’s largest tunnel-boring machine is on schedule to break into daylight this spring after a tumultuous dig under downtown Seattle that’s years behind schedule. The ...