Beach Drive is closed to cars at all times between Broad Branch Road and Joyce Road and from Picnic Grove #10 to Wise Road. There is no through traffic on Beach Drive with both Bingham Drive and Sherrill Drive closed to cars. Even though the road is open to cars from Joyce Road to Picnic Grove #10, there is practically no traffic on it. I can count on one hand the number of cars on that section of Beach Drive I see in a week.
I commute daily from Dupont Circle to downtown Silver Spring via Rock Creek Park. Since the pandemic, when the Park Service closed Beach Drive to through traffic, my commute has been a dream.