In The Loop Quick Looks - Chicago Area Deep Tunnel Project

Chicago is home to one of the biggest public works projects in the world. It’s known as The Deep Tunnel, or the Tunnel and Reservoir Plan. Construction began 40 years ago. And when it's finally finished the tunnel project will be 130 miles long. Its price tag; 3.5 billion dollars. The system is supposed to solve Chicago’s worst flooding, but even this modern marvel may not be enough to fully protect the city.
Part of the reservoir opened last November…in its first months of service it was filled to a depth of 17 feet and held about 400 million gallons of water. The third and final part of the project will be completed in 2019.