 can't exit the Southeast Southwest Freeway at lower 14th Street, Potomac Park, or the 12th Street Expressway. The 3rd Street Tunnel is open. Many road closures remain, though, across the National Mall and near the Tidal Basin as we get ready for the fireworks. The dog days of summer are here. Heat, germs, odors, you need Hadid. Get 50% off sanitizing, disinfecting, and pet odor elimination for your rugs. Visit JoeHadid.com. Dave Dildine, WTOP Traffic.