[ericras]

I agree. They have painted large concrete structures like this in cold weather places in the United States and they start chipping and deteriorating almost immediately. A deteriorating "public arts" project where untalented "artists" graffiti the side of an overpass is far worse than plain concrete.

[AlotOfReading]

Murals seem to last just fine here in Seattle and in the Nordic countries. Maybe your city needs to buy better paint?