WSDOT: Ready to restart Bertha this week

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

The Bertha tunnel-boring machine.

SEATTLE (AP) — State transportation officials say they are getting ready to restart the tunnel-boring project in downtown Seattle.

The Washington Department of Transportation says the machine digging the tunnel will be ready to restart sometime in the next week.

The state says the giant rotary drill, known as Bertha, will have to be stopped periodically to allow it to cool off, since the machine has a tendency to overheat.

Transportation officials do not have an estimate of how long it will take the tunnel boring machine, known as Bertha, to cut through 20 feet of concrete.

The machine first overheated more than a year ago and has moved only a few feet since then.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s


Notice: you are using an outdated browser. Microsoft does not recommend using IE as your default browser. Some features on this website, like video and images, might not work properly. For the best experience, please upgrade your browser.