WASHINGTON- Beach Drive between Porter Street NW and Rock Creek Parkway will close between 8 p.m. and 5 a.m. June 12th through June 23rd. The temporary night-time closures allow the National Park Service to replace old lights in the Beach Drive Zoo Tunnel with new energy efficient LED lighting. The NPS expects to reduce energy consumption from tunnel lights by 75 percent. https://www.nps.gov/rocr/learn/news/zoo-tunnel-june-2015.htm