Venice it sinks

This morning I went in Venice for business.
On the way I’ve found an “under construction” sign on a bridge. My eye have noticed that the “canale” was empty of water and some people was on work to rebuild something (near C? d’Oro boat stop)… I was impressed how the bottom of the “canale” are dirty and gray… look by yourself in these pictures

 

C? d'oro canal



C? d'oro canal

C? d'oro canal

C? d'oro canal