• Subscribe
  • Magazine
  • 40 Under 40
  • Supplier's Directory
  • Advertise
  • Contact Us
    1. Home

    Sound Transit Tunnel Boring Machine Hole-Through (September 2016)

    Sept. 6, 2016
    Sound Transit contractors have completed mining the last tunnel segment for the Northgate Link Extension twin tunnels. Their tunnel boring machine has holed through the wall of a retrieval shaft at the University of Washington Station.
    Default 57cedc6fdd77c

    Sound Transit contractors have completed mining the last tunnel segment for the Northgate Link Extension twin tunnels. Their tunnel boring machine has holed through the wall of a retrieval shaft at the University of Washington Station.