Thanks for logging this.
For the record, on 12/6/2013 RCC accompanied TFL and LBRUT officials on a survey of the A316 where this issue was raised with them.
Twickenham Bridge to Thames Path
Thread
#852
Twickenham Bridge to Thames Path
The cycleways along the Thames Path and along Ducks Walk are not connected with the south/east side cycleway across Twickenham Bridge and only to the north/west side cycleway via a long detour through Old Deer Park or along The Avenue.
A ramped way down from the bridge would create a useful route for people into and out of Richmond town center that is currently only possible by using two flights of steps.
I really hope something is done about this. I have arthritis and am finding it increasingly difficult to carry my bike up the steps. I think the detour through old deer park is not really permitted for cyclists and that is the only way to access the A316 from the Richmond side tow path.