The U-shaped viaduct is the brainchild of a multidisciplinary team of experts from SYSTRA whose aim was to come up with an economical structure combining all the components of the system to provide a practical solution for both installation and maintenance.

SYSTRA has taken out an international patent to protect the U-shaped viaduct.

Main advantages of the system

• optimal integration into the urban environment (reducing the visual impact by 50%),
• integrated noise protection,
• integration of cable stays and system function,
• possibility of reducing the length of the viaduct by 1.5 to 2 metres compared to conventional design viaducts, as the main part of the station is made up of the viaduct itself,
• possibility of reducing station buildings by 1.5 to 2 metres,
• inclusion of safety devices designed to keep the train on the viaduct in the event of any derailment (which is not possible with standard noise protection systems),
• inclusion of walkways for maintenance and evacuation on either side of the track,
• cost reduction, in terms of construction of both the viaduct and the -* system,
• flexible construction programme (precast beams and slabs cast in situ, precast segmental construction, cast in situ construction, full precast span method),
• speed of construction, construction can be started at different points along the line.

• Taipei AGT, Neihu Line (Taïwan)
• Santiago MRT Line 5 (Chile)
• Santiago MRT Line 4 (Chile)
• Delhi MRT Line 3 (India)
• Dubai AGT (U.A.E.)
• Guangzhou MRT Line 2 (China)

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