Ashby Street resident Rachael Trezise said she contacted contractors Arcus FM in autumn 2019.
Sainsbury s on Brazen Gate, Norwich
She said: I was told the work would be done by the end of February and I presumed that meant 2020 rather than 2021. The alleyway is very slippery and dangerous which we are certainly all concerned about. It continues to be more and more of a problem.
People living there say drug paraphernalia is also left in the alleyway, and that overgrown trees leads to a loss of light in summer.
The alleyway, which is publicly accessible, is used by residents when putting their bins out, and to access garden spaces.