Gambarogno, Tessin

The renewal of the Gambarogno (MIG) railway infrastructure included line 631, Cadenazzo - Pino confine between 159.600km and 175.000km. The line runs from east to west on the left side of Lake Maggiore and is integrated with the Bellinzona - Luino - Gallarate line, with a central function between the connections of the Gotthard and Simplon axes. The most important steps needed to achieve the objectives of the MIG project are:

• Integration of a second track at the Locarno-Luino line junction at 160,700km
• Doubling of the line between Contone and Quartino, 161.000 - 163.700km
• Extension of the current track 4 at Magadino-Vira station
• Replacement and modernisation of overhead contact lines and supply of the stations of Magadino, San Nazzaro and Ranzo
• Replacement and modernisation of auxiliary power line between Cadenazzo and Magadino
• Replacement of the security systems in Magadino, San Nazzaro and Ranzo-San Abbondio with a single electronic system centralised in Magadino
• Rehabilitation and adaptation of all civil engineering works (bridges, underpasses, shafts, discovered and ancillary works) between Km 159,600 and Km 175,000

The civil engineering and railway engineering work was awarded by SBB with the Bm3 concept. The project therefore includes the entire railway technology and all trades of track construction and civil engineering as well as the complete rail-bound logistics and safety.

Building under operation
A large part of the work was carried out while the line was closed between 12.06.2017 and 08.12.2017. After this phase and until 27.04.2018, works were carried out with daily closures from 09.00 - 17.00 hours from Monday to Saturday, as well as at additional nightly intervals and at weekends.

Technical Data