Commissioned by the Municipality of Almere, Knipscheer Infra-Clean has recently started maintenance work on various underpasses and tunnels. In the coming years, Knipscheer Infra-Clean will be responsible for cleaning, repairing and preserving the concrete and steel of the artworks using OMOP specifications. The permanent anti-graffiti color coating (Graffitiguard Permanent 2C) is applied with spray technique for the tightest possible result on the underpass. Blowholes and damage to the concrete were first repaired with Mavrox EP Scratch Coat 2C.