Be careful what you believe. Below is what the Environment Agency website says about the timber footbridges. I have added some text in red.
Footbridges over the Jubilee [River]: who looks after them?
Did you know that all the footbridges over the Jubilee are the responsibility of the relevant local authority? [because we passed that responsibility to the Local Authority]
Many were constructed [by the Environment Agency] at the same time as the Jubilee [River but have a short lifespan]
Here is a list of footbridges that are currently closed to the public for safety reasons, and which council to contact for more information:
Ashford Lane footbridge, Dorney. Contact www.buckinghamshire.gov.uk(External link)
Allotments footbridge, near A332/ B3022, Slough. Contact www.slough.gov.uk(External link)
Black Potts footbridge, near Eton Road, Datchet. Contact Royal Borough of Windsor and Maidenhead(External link)
The following footbridge was [partially] replaced in 2023:Berry Hill footbridge, Taplow. Contact www.buckinghamshire.gov.uk(External link)