“Dear PoPville,
Do you have any idea what is going on on Piney Branch Parkway between Arkansas and Beach Drive? A construction crew has set up camp.”
I believe this is a staging area for the massive Beach Drive Rehabilitation project.
The National Park Service reports:
“On or about September 19, 2016, Beach Drive will be closed in both directions from Rock Creek and Potomac Parkway NW to Tilden St NW.”