The first four tunnel boring machines are coming to New Jersey to build the Gateway rail tunnel. Here's what they do and why they're the safest method.

The $80 million tunneling machine known as ‘Bertha’ resumed mining Tuesday beneath the Seattle waterfront for the first time in about seven weeks. The machine moved forward about two feet, allowing ...

On Wednesday morning, crews removed the final piece of Bertha the boring machine out of the pit it has sat in since reaching the end of the tunnel running under Seattle. A live time lapse of the ...

Victorian government experts have confirmed that the tunnel boring machines are a “factor” in a sinkhole opening up in the ...

A colossal project to reduce traffic in the underground tunnels connecting the Virginia cities of Norfolk and Hampton just had a big breakthrough — literally. Since 1957, the two cities have been ...

SEATTLE — Visitors got a last look at the Seattle tunneling machine nicknamed Bertha on Saturday before it heads underground for more than a year. Gov. Jay Inslee was among the dignitaries attending ...

A massive tunneling machine has done its job, digging deep below the District. “It’s a monumental milestone for us,” said Carlton Ray, vice president of the Clean Rivers Project for DC Water. The ...

A 9.8 million-pound machine dubbed Mary keeps on boring through sediment as it makes its way under the harbor from Norfolk to Hampton. The $101 million tunnel boring machine, named after Hampton ...

Seattle, meet the latest German import: it weighs 450 tons and travels about 58 feet per day. BMW? Mercedes? Audi? Nope, it's a Herrenknecht. The Herrenknecht tunnel boring machine arrived partially ...