So as to remain in coherence with the research already carried out within the Loire department, only the motorway was surveyed. To this end, an inventory was initially carried out of those structures located along the A47. Then, depending on their technical characteristics (size, substratum, etc.) and location, the structures were equipped with camera traps, when appropriate. At the same time, data on A47 wildlife collisions and numerous exchanges with local stakeholders (notably hunters) allowed us to identify the key zones. The analysis of all these elements demonstrated the dysfunctionality of the identified corridor and specifically underlined the motorway’s barrier effect vis-à-vis large animals. With a view to re-establishing ecological bridges between the Côteaux du Lyonnais and the Pilat Massif, we proposed the modification of existing structures and the creation of new structures, such as biological bridges.