INTEGRATED
ENGINEERING
AND ARCHITECTURE

The route spans 10,250 km in total length, commencing near Terni (San Carlo area) at the Terni East junction on the SS Terni-Spoleto. It continues through the valley on an embankment for approximately 600 m until reaching the Tescino viaduct. From there, it progresses through a tunnel (Tescino) that spans about 1500 m, descending into the Nera River valley. A junction within the tunnel connects it to the SS 209 "Valnerina," predominantly situated within the tunnel itself. The road then traverses the Nera River via a 300 m arched bridge, entering a lengthy tunnel (Valnerina) approximately 3500 m in length. Emerging from the tunnel, it proceeds under the Velino to reach the river valley where the junction for Piediluco is situated. The route then continues along the river valley floor until it intersects with the existing road network near the Pie di Moggio area, on the Umbria-Lazio border. The bridge is notable for its visual impact, both in terms of its size and its harmonious integration with the surrounding landscape. The project conceptualises the bridge as a structure centred around a fundamental geometric form—the arch—which is informed by the local environment. This arch motif, a defining feature of industrial architecture, is echoed prominently on the main facade of the nearby Galletto Hydroelectric Power Plant and is also reflected in the design of the turbines at the adjacent Papigno complex.