Bertha Launch Pits Become Tunnels
ENR Northwest » The launch and exit pits created for tunnel-boring machine [...]
ENR Northwest » The launch and exit pits created for tunnel-boring machine [...]
KIRO7 » Tunnel-borer Bertha may complete drilling the State Route 99 tunnel [...]
The Seattle Times » A 360-degree video shot inside the tunnel [...]
The Seattle Times » The massive drill has veered a few [...]
GeekWire » The Washington State Department of Transportation (WSDOT) takes viewers on [...]
GeekWire » Seattle Tunnel Partners (STP) has released a video of construction [...]