The main reason was the active targeting and clearing the backlog of oldest jobs occurred from work that was unable to be completed during Covid, as well as lack of materials and contractor capacity.
Y prif reswm oedd targedu a chlirio hen waith oedd wedi cronni gan nad oedd modd ei gwblhau yn ystod Covid, yn ogystal â diffyg deunyddiau a chapasiti'r contractwr.