I read in your recent email update that you are keen to see Hammersmith Bridge open again soon for motor vehicles. (It is open currently for walkers and cycle riders).
I understand that funding has not yet been found and that it may be 2 or 3 years until it is fixed for motor transport, and even then may need further refurbished within a decade.
Since the bridge is such an iconic local structure, as you pointed out, wouldn't it be a wonderful opportunity to encourage its use now as a fantastic walking and cycling link with a low cost intervention such a greening it with plants and flowers?
A short term solution for people who may have used public transport to cross the bridge could be the use of side-by-side cycles (see image attached, taken on a recent visit to Seville). Where people can ride across the bridge and choose whether or not they wish to pedal.
(This concept been trialled in LB of Hackney where people over 60 or with issues of mobility were able to make local trips on these cycles and funded by a DfT innovations grant)
Should such measures be successful in encouraging alternatives to motor vehicles in the short term, coupled with an expected reduction in traffic across the network (as happened last time the bridge was forced to close in the mid '90s as evidenced in a report published at the time), there may be no need to spend the large sums of money required to make this iconic Victorian bridge able to carry heavy double decker electric buses.
In this era of climate change emergency, political leaders in H&F can take this opportunity to demonstrate alternatives to the motor-centric status quo with a little imagination.