The $817 million third-intake project at Lake Mead in Nevada reached a new milestone with the completion of a connector tunnel 400 feet below ground. It took three years and more than $52 million for crews to excavate the half-mile tunnel. High groundwater flow contributed to delays in the project, although pumps are used to get rid of as much of the water as possible. The next step is to maneuver a 70,000-pound steel pipe that is 20 feet long and 16 feet in diameter into place.

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