Lot 2 - Santa Lucia Tunnel A1 - Expansion to 3 lanes - Barberino di Mugello - Florence North stretch
The project for the Barberino di Mugello – Incisa Valdarno expansion to three lanes, in the Barberino di Mugello – Florence North stretch, covers from marker 261+503 (corresponding to the Barberino di Mugello exit) and marker 279+000 (about 700 metres south of the Calenzano(Sesto Fiorentino exit) of the current A1 Milan – Naples highway and is part of the project for enhancing the highway between Sasso Marconi and Incisa Valdarno, constituting the initial Florence side Apennine stretch, the most complex due to the morphology and environmental characteristics of the terrain involved.
The highway expansion in the stretch in question, covering 17.5 km, involves the construction of a new carriageway with 3 lanes plus an emergency lane in the south direction and the construction of a single tunnel 7.7 km long (Lot 2) called ‘Santa Lucia’, which will be aimed at guaranteeing the single direction flow of traffic of the highway stretch in question.
The tunnel will be excavated using an earth pressure balance Tunnel Boring Machine with a diameter of 15.935 m, the largest TBM ever built for a European project.
The project for the excavation of the Santa Lucia Tunnel and progress reports, the working phase and information on the machine, are available on the dedicated section of the website, on the link: http://www.pavimental.it/galleria_santa_lucia.php