yeah, it was pretty harsh. he is lucky.
We shot out from Grand onto Milwaukee past Blommers, hooked over the Kinzie bridge and right onto Lasalle. I was 10 meters back from absntr when I saw his front tire drop between the grid plates and wedge. His speed in addition to the stuck front tire threw him directly in front of his bike and onto the bridge, contacting head first. (edit- face first)
Dept of Streets and San was rolling by opposite direction. They diverted traffic and called Chicago Finest. An ambulance was on the way. absntr was rough, but tough.
thanks to the others who stopped to help.