DC Water has completed testing of the Rock Creek Main Interceptor—a major sewer line near the P Street NW ramp to Rock Creek and Potomac Parkway—after a sinkhole appeared on Friday. The results showed no significant leaks or structural issues in the sewer line.

An emergency closure was put in place out of an abundance of caution due to concerns that the roadway may have been compromised. Over the weekend, DC Water crews performed dye trace testing using a non-toxic, biodegradable dye to detect any leaks or defects and to trace flow into Rock Creek ...

DC Water will be making two oversized equipment deliveries to support the Potomac River Tunnel Project. This means overnight closures on the 3500 block of Water Street NW—near the Capital Crescent Trail entrance.

The first closure will take place overnight on Tuesday, July 1, and the second on Monday, July 7, weather permitting. The work zone will be closed to traffic and parking restrictions in effect near the Aqueduct. Brief delays may be possible. The Capital Crescent Trail will remain open, and flaggers will be on-site to help guide pedestrians, cyclists, and ...

DC Water is advising motorists of an emergency closure to the P Street Northwest Ramp to Rock Creek and Potomac Parkway, due to a sinkhole on the ramp that may compromise the roadway. The closure will begin between 9 p.m. and 11 p.m. tonight until further notice, in order to assess the extent of the void beneath the roadway and near a major sewer line.

A six foot pipeline, known as the Rock Creek Main Interceptor, runs through this area and carries as much as 100 million gallons of wastewater a day.

The current sinkhole is located along the shoulder of the ramp, measuring two feet long and wide ...