Connection between the “Dello Spluga” trunk road no. 36 and Milan’s motorways

Realization of the connection between the “Dello Spluga” trunk road no. 36 and Milan’s motorway system in the Municipalities of Monza and Cinisello Balsamo.

The intervention as a whole involved:

• a city tunnel between the municipalities of Milan, Monza and Cinisello Balsamo
• the exit of Cinisello Balsamo
• the cycle/pedestrian interconnection path between the municipality of Monza and the new Auchan shopping center
• the new surface road system in the lot concerned by the works.

The infrastructure represents a solution to the problem of commuter vehicle traffic which flows from Milan’s hinterland municipalities into Milan (this stretch of road is the busiest in Italy, with over 200,000 vehicles per day).

Impregilo SpA, the successful bidder, chose the [3]PSC Group[3], with which it had already fruitfully collaborated [3]for the realization of the Macro-lots of the Salerno – Reggio Calabria motorway, complying with the leadtimes-costs-quality of the works.

The work was carried out and managed in full compliance with current plant engineering and accident prevention regulations, using installation methods consolidated by many years of experience in the construction of tunnel systems. The tunnel was inaugurated 7 months before the contractual due date.

PSC experts sensed the possibility of incorporating the filtering plants directly into the tunnel with an innovative system never used before in Italy, with which it is possible to capture almost 100% of exhaust gases and treat these before introducing them into special tanks for subsequent disposal.

The lamps used for lighting were those with high efficiency LEDs, including those for tunnel reinforcement lighting; this resulted in lower energy consumption and optimal uniformity of illumination for the operator.

Tunnel

• Electrical substations (4) serving the tunnel
• Power supply (ordinary “ENEL” electricity, “UPS” backup, “Generator” emergency lighting)
• Tunnel lighting (ordinary, backup, emergency) with LED lamps
• Longitudinal tunnel ventilation
• PLC system for fiber optic management of all systems serving the tunnel
• SCADA Supervision System locally and remotely managed by the ANAS Control Centre
• Air sanitizing system at the tunnel exit entrances (filtering stations)
• “SOS” emergency communication system for users connecting to 118, Fire Service, Police, ANAS
• Water fire extinguishing system
• Video surveillance inside the tunnel
• Tunnel fire detection system
• Air quality detection sensors
• Variable message panels for information to users
• FIRE SERVICE-118-POLICE-ANAS tunnel radio communication

Surface road network

• Electrical substation serving the surface road network
• Led lamp road lighting
• Rainwater lifting tanks
• PLC system for fiber optic management of all systems serving the rainwater lifting tanks
• Variable message panels for information to users
• City video surveillance system
• “SOS” emergency communication system for users connecting to the police

In figures

• Supply and installation of 2,000 Led lighting bodies
• Supply and installation of 500,000 meters of electrical and optical fiber cables
• Supply and installation of MV / LV transformers with a power of approximately 10 MW
• Supply and installation of generators with a power of approximately 2.5 MW
• Supply and installation of 2 air sanitation units
• Supply and installation of 110,000 m of pipes and ducts
• Supply and installation of 56 tunnel fans
• Supply and installation of traffic light systems along the entire axis of the works.