Ottawa’s Transitway has been the core infrastructure of an efficient and great BRT system of Canada, exclusive roads with steep rock slopes along more than 3,2 km which are most of the time exposed, showing pieces of evidence that the risk for the users may have been increasing. In fact, the low number of geological events and its neglected consequences related to the rock slopes until now have created a perception of a low-risk area for all the local society. The main objective of this work is the assessment of the risk inherent to the conditions posed by these rock slopes using the geotechnical engineering point of view.