Only one northbound lane was open, this evening, on The Ironworkers Memorial Bridge. I spotted the rider's helmet first, 100 or so meters before the his or her bike (red cbr?), which was wedged under the rear of another vehicle.
I didn't see any blood, anyhow, so hopefully the helmet's being behind the rider's bike was a good sign- meaning that the rider didn't slam into the vehicle too, but instead rolled over and over, gradually loosing speed!
Best of luck, if you're still with us.