WASHINGTON, DC (WUSA9) -- DC is dumping $2.6 billion into a hole in the ground.
Right now, a $30 million steel and concrete caterpillar is gnawing at the earth six days a week, 24 hours a day about 120 feet down. It's DC's biggest construction project since Metro and you probably never noticed.
The Lady Bird tunnel boring machine is building the first of more than 13 miles of tunnels, so the city can end the century-old practice of dumping raw sewage into our rivers during many rainstorms.
Lady Bird is about a quarter mile in from a ten story shaft at the Blue Plains Advanced Wastewater Treatment Plant and she's headed toward Nationals Park. Crews are about 70 feet below the Potomac off the Navy Research Lab.
Lady Bird stretches out about a football field and a half. She's like a giant assembly line chomping into the earth six feet at a time.