The Val Trompia is an important industrial district that extends from the north of Brescia, along the river Mella. Nowadays there isn't any fast connection between this district and the A4 motorway.  As a result, the all area is subjected to intense traffic loads. This motorway,  that is 40 km long, characterized by a series of tunnels, will be an occasion for the Valtrompia  to relieve traffic congestion and to enhance the productivity, thanks to a faster and better system of infrastructure.