As part as geotechnical site investigation for the LRT, 6 stages of investigation has been carried out between 2012-2021. Geotope-Levin has managed and coordinate between the different authorities, designer, owner, consultants and laboratories. Suprime supervision on the geotechnical investigations combined with GIS software has gain optimaization of the initial program. Management of the geo-database allow to reduce the numver of boreholes and to share the geotechnical information between all parties.