Seattle Tunnel Machine Begins Drilling Under City Streets – ABC News

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Seattle Tunnel Machine Begins Drilling Under City Streets
ABC News
Seattle’s tunnel-boring machine has moved past the concrete walls that make up a repair pit and has started digging into soil about 80 feet below street-level. After being out of commission for about two years, the machine called Bertha has tunneled
Bertha moves out of access pit, begins drilling under Seattle streetsQ13 FOX


After 2-year breakdown, Bertha begins tunneling under Seattle streetsKOMO News
Bertha making progress, tunnels 73 feet since repairsThe Seattle Times

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From:: Seattle News By Google News

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