On Tuesday 4 April 2017, the giant 17.48m diameter EPBM working under the streets of Seattle in Washington State, USA, broke through to complete its drive to excavate and build the double-deck highway tunnel to replace the existing Alaskan Way SR-99 viaduct underground and allow its demolition.
- Күн бұрын
Bertha completes its journey
- Рет қаралды 164,273
Пікірлер: 38