The contract involves upgrading an 11km stretch of State Road 223 between Grosseto and Siena in Tuscany, Italy. It includes three junctions, six tunnels – the longest measuring 1.5km – and five viaducts.

Bologna-based Adanti will carry out the work together with consortium partner Vittadello Intercantieri di Padova. Adanti’s share of the contract amounts to 65%.

Construction is set to begin in the spring of 2012 and take two and a half years.