Bertha, the tunneling machine that has been making her way underneath 99, is scheduled to break through the final 5 foot southern wall today, Tuesday, April 4,
The entire route comes in at 9,270 feet. Here’s a shot of the assembly wall where she’s set to break through. A live stream is available online. Early this morning, Bertha was roughly 30 feet from her journey’s end. She’ll start boring through the final wall at 8am and her 5 foot path is expected to be about a foot per hour trip.
Here’s her path, the machine is set to break through near 6th Ave N and Thomas St today:
