WATCH: Drone video shows progress on Bertha’s tunnel in Seattle

Bertha may have been torn apart, but the work continues on the tunnel under Seattle. A new video from the Washington State Department of Transportation shows just how far along the project is coming.

RELATED: Watch Bertha break through to the surface

The video was taken using a drone passing through the tunnel.

Tunnel progress

As of October 2017, the only parts of the tunnel that are completely finished are the corbels — the pieces that hold the walls and roadways in place. Other portions, built on top of the corbels are coming along.

The corbels shown in brown, inside the tunnel. (WSDOT)

• Launch pit: 96 percent
• Northbound walls: 94 percent
• Southbound roadway: 85 percent
• Southbound west walls: 72 percent
• Southbound west walls (upper half) and east walls: 45 percent
• Disassembly pit: 5 percent

As MyNorthwest previously reported, the Alaskan Way tunnel won’t just be a passageway; it will be a living, breathing machine once it is completed. A web of interconnected pumps, lights, vents, and other systems will keep the traffic flowing. Work on those systems is also underway:

• Hangers (NB): 74 percent
• Hangers (SB): 12 percent
• Lighting (NB): 60 percent
• Lighting (SB): 3 percent
• Mesh and fire proofing (NB): 68 percent
• Fire suppression (NB): 42 percent
• Mesh and fire proofing (SB): 12 percent
• Fire suppression (SB): 3 percent

You can find an interactive map of the Alaskan Way project here.

Follow @http://twitter.com/Mynorthwest