Big Bertha how a massive tunnel boring machine dug a highway under Seattle

"In 2013, construction crews raced to replace a crumbling elevated highway along Seattle's waterfront with a double-decker tunnel running almost two miles under the city. This is the story of Bertha, the mammoth and complex tunnel boring machine that simultaneously dug and built the tunnel, and Depu...

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Bibliographic Details

Main Author:	Abler, Amanda (Author)
Other Authors:	Wu, Katy (Illustrator)
Format:	Books Print Book
Language:	English
Published:	Seattle, WA : Little Bigfoot, an imprint of Sasquatch Books, 2024.
Subjects:	Tunneling > Equipment and supplies > Juvenile nonfiction. Roads > Juvenile nonfiction. Roads > Design and construction > Juvenile nonfiction. Tunnels > Juvenile nonfiction.
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