Memo: State had concerns about Bertha since digging began

«Previous
1 of 4 Photos
Next »
Read the story
Bertha Digs Away
«
  • Bertha Digs Away
  • 140103_bertha_pipe_embed
  • Seattle tunnel
  • 140103_bertha_gal_03
»
Bertha Digs Away
As Bertha, the SR 99 tunneling machine, passes the 800-foot mark in November 2013, the view of her launch pit becomes a distant point of light. (Photo courtesy: WSDOT)