The viaduct on line b of Rennes metro network is being built by Eiffage Génie Civil's teams in consortium. In mid-September, a significant milestone was reached, with 50% of the decks (1,200 m) already completed.
This non-standard structure with bend radii of 125 m was built with a launching beam enabling simultaneous suspension of 2 spans – an exploit carried out for the first time worldwide.