Tip: The route to the North of DC though Maryland is accessible by land without having to cross a river. Those routes consist of numerous small suburban roads and a few larger avenues which head towards the center of DC. In some places, the DC-Maryland border runs through the middle of roads, and will be hard for DC's police to block off. As such, it will be harder for them to be blocked. The best way to get into DC will probably be to approach Rock Creek Park from the north through these suburban roads. Then to get to the national mall, you will have to head south towards the Potomac river. The best road to do this would have been Beach drive?Rock creek parkway (which runs through Rock Creek Park from north to south, all the way to the Kennedy Center), however it tends to be closed pretty often. As such, you might need to use a few of the other roads. Just remember, once you are at the Kennedy center, you are already within walking distance of the National mall.
Tip: The route to the North of DC though Maryland is accessible by land without having to cross a river. Those routes consist of numerous small suburban roads and a few larger avenues which head towards the center of DC. In some places, the DC-Maryland border runs through the middle of roads, and will be hard for DC's police to block off. As such, it will be harder for them to be blocked. The best way to get into DC will probably be to approach Rock Creek Park from the north through these suburban roads. Then to get to the national mall, you will have to head south towards the Potomac river. The best road to do this would have been Beach drive?Rock creek parkway (which runs through Rock Creek Park from north to south, all the way to the Kennedy Center), however it tends to be closed pretty often. As such, you might need to use a few of the other roads. Just remember, once you are at the Kennedy center, you are already within walking distance of the National mall.