The District of Columbia Water and Sewer Authority has proposed modifying its current $2.6 billion D.C. Clean Rivers Project to incorporate green infrastructure into the later stages of its expansive ...

Gigantic tunnels throughout the capital keep the city safe from extreme flooding events. If too much water gushed into their ...

Billionaire entrepreneur Elon Musk's mysterious tweets about tunnels have sparked a flurry of speculation about his next project -- and he apparently did some research last week in D.C. The founder of ...

DC Water has reached a major milestone on the 8.8km long, 5.5m diameter Potomac River Tunnel Project with the successful completion of factory acceptance testing for its second and final 6.4m diameter ...

Road work at the Interstate 70 Eisenhower-Johnson Memorial Tunnels will require alternating traffic through the tunnels overnight for the next month. The resurfacing project that is underway is ...