Locals say discarded drug paraphernalia and dense vegetation are putting them off using the path.
Plans to allow sporting events, live music and late night alcohol sales are under consideration.
The combined authority will fund more than 5,500 charging points, including 1,058 in Peterborough.
The council says it could mean a £9.8m grant to help deliver the proposals.
Nene Park Trust says it is "hugely disappointed" after additional funding was given to other projects.
The library will close on 30 October, ahead of a temporary site opening in November.
Peterborough City Council says it wants to create a plan to tackle homelessness that "truly works".
Current charging points mostly cover supermarkets and workplaces, but not residential areas.
Council officers are recommending that the cash is spent elsewhere.
