en.Wedoany.com Reported - Italy's Mariani Viaduct on the SS76 highway has reopened to traffic, as part of the Marche-Umbria Quadrilateral road network project delivered by Webuild on behalf of the Italian National Road Authority (ANAS). The southbound lane is now open for vehicle passage. This eliminates a bottleneck on the Perugia-Ancona corridor, reducing detours and delays that have affected traffic between the inland and the coast in recent years.

The 2.2-kilometer section had been closed since 2018. The reopening improves traffic flow and relieves pressure on local roads that served as alternative routes during the closure. Related work involved environmental assessments, restoration activities, and design updates. Thanks to coordination among institutions and technical stakeholders, including the Marche Region, ARPAM, AST, Quadrilatero, ANAS, and the Municipality of Genga, work resumed at the end of 2025.

The work included widening the viaduct through the construction of new piers and abutments, and the installation of a new span approximately 30 meters long. The 572-meter Sassi Rossi 2 tunnel and the 141-meter Sassi Rossi 1 tunnel were also upgraded to meet current standards. Currently, one lane is open in each direction on the viaduct, while construction continues on the viaduct lanes. This approach ensures the safety of both drivers and workers while keeping the road open.

This reopening marks an important step in the delivery timeline of the Maxi Lot 2 project, which is expected to be completed by the end of July 2026. Once fully operational, the infrastructure will help reduce travel times along the corridor and decrease traffic disruptions within urban areas, enhancing safety.

Maxi Lot 2 includes work on the SS318 and SS76 corridors (Fossato di Vico–Cancelli section), as well as the first two phases of the Pedemontana della Marche. Upon completion of these phases, a direct connection between Umbria and Marche will be achieved. Drivers will be able to travel faster between Perugia and the Adriatic coast without detours.

The project involves the construction of a 67-kilometer network of tunnels, viaducts, and interchanges, which will improve accessibility, safety, and connectivity in the central Apennines.