News & Politics A Sinkhole Has Opened in a Tunnel Near the Capitol The Third Street Tunnel sinkhole may or may not be a giant metaphor. But it is causing "significant gridlock." Transportation, QAnon, tunnels | Aug 23, 2021
News & Politics Changes Are Coming to DC’s Oft-Confusing Highway System Two of DC’s busiest roadways are getting new names. DC Transportation, tunnels, 3rd Street Tunnel, I-695 | Jul 8, 2021
News & Politics Why Is DARPA Looking for Local Underground Spaces in Such a Hurry? It put out a request seeking tunnels for "research and experimentation." It needs them in two days. tunnels, DARPA | Aug 29, 2019
