Was founded in 1932 by Geom. Leone Collini who, after starting his career in the building sector in the Trentino area, gained the extensive professional kwnoledge which the company to boost reconstruction during the years immediately following the Second World War in order to achieve rapid dimensional and operational growth.

During those years, between 1945 and 1960, the reference market was that of hydro-electric plants with the construction of all associated underground works and therefore, specifically, tunnels.

The horizon of the Company widened subsequently to the great road, motorway, railway, hydraulic infrastructures and to civil and industrial works, increasingly more challenging in terms of processes and know-how.

Currently the company is managed by the second and third generation which is continuing to develop the company, expanding the level of specialization, the application of new building technologies and attention to safety and quality procedures.