Totally bummer. Let me guess, you crashed at the steep S shaped switchback near Spout Run behind the strip mall with the Giant/Italian Store/Big Wheel Bikes etc.? I crashed there too about 3 weeks ago. That area is treacherous since the pavement stays wet and there are lots of leaves on the ground. The painted strips dividing the bike path there is thick and very slippery when wet--I wiped out when my front wheel hit it.

Be extra, extra careful going down that switchback, it's the worst spot on the Custis Trail IMO.