Other than tunnel digging just being fascinating, I love the picture of the surveyor setting up their total station. That would be such a fun project to be surveying for.

– via Jonathan William Sodt
Highway 99 tunnel mystery may take drill rigs or divers to solve

Bertha, the Highway 99 drilling machine, had tunneled about one-eighth of the route from Sodo to South Lake Union when an unidentified object stopped it. Project managers are trying to identify the object and figure out how to get Bertha moving again.

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