Autostrade del Lazio awarded the construction and concession contract for the 186km to Sacyr's Italian subsidiary, SIS. The project has an estimated investment of €2.8bn (£2.36bn), with expected revenue of €12.25bn over the 43-year concession period.
SIS has already been involved in building the 145km Pedemontana-Veneta freeway, which involves a total investment of €2.5bn.
The Rome-Latina freeway is the final part of Lazio Major Bypass, which has been designed to bring the infrastructure in line with European standards.
The project requires the construction of 78 viaducts and overpasses with a total length of 23.7km, two tunnels with a total length of 2.35km, five cut-and-fill tunnels with a total length of 1.425km, 17 link roads and three central toll barriers, among other infrastructure.
The average daily intensity once operating is envisaged to be 32,000 vehicles and the income portfolio throughout the lifetime of the concession is expected to reach €12.25bn.