A new Metro tunnel to Georgetown could relieve congestion on the Blue, Orange, and Silver lines — but would cost billions and take decades to finish.

The tunnel is supposed to be finished in late 2022.

Three major tunnels down for the Clean Rivers Project, one to go.

DCist descends 160 feet into the earth to find out what’s going on down under Bloomingdale.

About 98 times a year, the District gets enough rain that its aging combined sewer system overflows, dumping roughly 2.5 billion gallons of wastewater in the Anacostia and Potomac rivers, as well as into Rock Creek. But today, D.C. Water broke ground on a $2.6 billion project that will all but eliminate the overflow, making area rivers and the Chesapeake Bay significantly cleaner in the process.

Are you tired of having to battle the crowds at Metro Center in order to transfer between the Red, Orange and Blue Lines? Soon enough, you’ll be able to hoof it, if you so choose: according to Kytja Weir, Metro is planning on installing a “virtual” pedestrian tunnel between Farraguts North and West this fall.