 Traffic and weather on the 8th to Bob Imler in the WTOP Traffic Center. In northwest D.C., the police activity continues to close Cathedral Avenue and Shoreham Drive just off of Rock Creek Parkway. So that if you're coming north on Rock Creek Parkway, your only option right now is to get onto Beach Drive and go up to Porter Street with this police activity. That is the only option you have coming northbound on Rock Creek Parkway.