This paper presents a review of the literature on the design of public roads in the vicinity of open-pit
mines, focusing on the latter's impact on slope stability. It then presents a case study on the design
of a major new regional highway along the crest of an abandoned mine in the city of Thetford Mines,
Québec, Canada. The first step involved a back analysis of a recent slope failure close to the location
of the planned highway in order to derive rock mass properties at the slope scale. Analyses were
conducted using the Shear Strength Reduction (SSR) method coupled with finite element (FE)
modeling as well as the limit equilibrium analysis (LE) method. Airborne LiDAR surveying results
were used in order to calibrate and validate the models. Forward modelling was then performed to
assess future slope stability