Willy from Alexandria,VA on 10/13/2021 6:47:10 PM:
Well... the closest to reasonable crossing is Brunswick.
You can google a more scenic but less traffic route from Brunswick to Purcelville,Va without having to be on Berlin turnpike the entire way.
Then you are on the Washington & Old Dominion trail on the way to Washington DC. This trail crosses thru Leesburg.
Having said this it will test your lowest gear going up the hill from the bridge at Brunswick. That part you will be jousting with traffic.
Still less frantic than trying to cross at Point of Rocks (Route 15 bridge).