Did you report this to the
Did you report this to the police, as you seem quite certain he pushed you in?
If you were already under the bridge this idiot should have had the common sense to wait for you. Not only did he put your life in danger but that of the child. IMO the parent is an utter moron for both these reasons.
How many times will they do this to other cyclists before they injure someone or worse? I know full well if it was one of my children they decided to shove I would be wanting them flogged in public for such actions (as I imagine would your own parents). The effin low life scum!!!