From its strong experience in bridges and viaducts, SYSTRA has decided to take advantage of advanced materials like Ultra-High Performance Concrete (UHPC) to design new viaducts, in order to enhance projects acceptability.
This new viaduct presents two main advantages:
1- Aesthetical design:
The webs may have some holes, in order to allow some view from the metro passengers, improve the architectural aspect and allow various esthetical expressions, and finally optimize the UHPC use
2- Higher performances:
The span between piers is about 45m to 50m (instead of formerly 35m with the same cost target). This longer typical span facilitates the crossing of crossroads. There are fewer piers thanks to the longer length of spans. It allows less interference with the existing utilities, and less works for diversion of utilities.
