Immensely proud to have accompanied BESSAC and SADE during the now completed 610-metre-long, up to 30-metre-deep, AVN2500 microtunnel crossing under the River Seine in the centre of Paris.
In a complex geological environment, the gravity-flow tunnel had to cross not only the river, but also under the metro line 5 viaduct, metro line 10, as well as train line RER C.
Before the works began, OPTIMUM engineers analysed the 10-layer geology and precisely defined the tunnelling parameters given the numerous constraints and complexity of the site. During the 3-month-long tunnelling operation, OPTIMUM continuously monitored tunnelling logs and ensured trenchless specialists were available to be despatched onsite whenever necessary to provide expertise.
Congratulations to all the teams involved for their dedication in making the project happen :
• Groupement Impluvium : Urbaine de Travaux / BESSAC / SADE TS / Soletanche-Bachy / Sefi-Intrafor
• Project owner : Mairie de Paris
• Implementation : Artelia / Icaruss / Terrassol
