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Then they will resume tunneling. This is their full timeline:

Late May 2014: Begin building the access pit's underground walls.

June 16, 2014: Submit seal system repair and bearing replacement
plan to WSDOT.

Late July through September 2014: Excavate the pit.

October 2014: Partially disassemble the machine and begin
repairing damage to the seal system and main bearing.

November 2014: Submit a full report of machine repairs to WSDOT.

February 2015: Test the machine to ensure it is ready to tunnel
beneath downtown.

Late March 2015: Resume tunneling.

This shows how they will remove pieces to make repairs.

This image shows how they will install a crane.

This shows how they will tunnel into the pit.

This shows how they will lower the groundwater.

This image shows how they will build the pit walls.

This image shows how they will build the pit walls.

This image shows how they will inject grout behind machine.

This image shows relocated utilities after.

This image shows relocating of utilities.

This image shows how they will inject grout between existing piles.

This image shows the access pit today below ground.

The Washington Department of Transportation released images illustrating Seattle Tunnel Partners conceptual plan for repairing Bertha. This image shows the access pit today above ground.

Dori Monson: With elaborate Bertha repair plan, a billion in overruns is conservative