New time-lapse video shows additional perspectives of Bertha lift
The SR 99 tunneling machine's 2,000-ton front end has been safely on the ground for a couple of days, but it's worth revisiting how it got there. We created a video that shows the Bertha lift from three different perspectives.
You can continue to track STP’s work on our time-lapse cameras and follow @BerthaDigsSR99 on Twitter for updates. Don't forget to check out the other resources we've created to give you a fuller understanding of Bertha's story:
- Single-angle time-lapse video of Bertha's front end lift (links to YouTube)
- Time-lapse video of Bertha's first piece rising to the surface (links to YouTube)
- Time-lapse video of Bertha parking in the pit (links to YouTube)
- Video of Bertha's breakthrough (links to YouTube)
- Video of crews chipping a Bertha-sized circle on the face of the pit’s southern wall (links to YouTube).
- Narrated video explaining STP's repair plan (links to YouTube)
- Seattle Tunnel Partners repair work plan (pdf 4.8 Mb)
- Video of crews building the access pit (links to YouTube)