A once-in-a-hundred-year update to the Charleroi Locks and Dam could reduce our carbon footprint

Pittsburgh's Action News 4 got an exclusive look inside a $1 billion infrastructure project that's been in the works for thirty years: a brand-new Monongahela River lock soon to be filled with water.A resident engineer and an equipment mechanics supervisor from the U.S. Army Corps of Engineers gave us a chance to stand in a place that will be filled with river water for the next hundred years or so, all in the name of bringing commerce into the future. Watch the full tour in the video above.