Retaining walls are geotechnical structures used to ensure the stability of slopes, overcoming large elevation differences of terrain, stopping landsliding, soil erosion and so on. These types of structures are very common, and there is a wide selection of types of support structures. As each terrain differs, it is necessary to describe in detail the criteria for selecting the appropriate type of support structure with regard to the environmental parameters where it's construction is envisaged. The construction principles that must be observed when designing supporting structures are contained in a norm called Eurocode 7. Eurocodes are building norms that play a significant role in the design, construction and maintenance of any complex structure in Europe. Following the rules of building codes for geotechnical design, Eurocode 7, a landslide remediation project on the Roman Road in Grožnjan which was initiated in 2014 due to heavy rainfall was produced in this work. The landslide is located in the flysch soil area. Flysch is prone to erosion, wear and landslide, and this is precisely the cause of landslides. The remediation project includes exploratory works, selection of the optimal landslide remediation method, calculations and project documentation, preparatory work on the construction site, the main part of the project and monitoring of the remedied landslide. After collecting information on soil and environmental parameters and adopting calculated loads, the most optimal method of remediation of the landslide is selected, applying Eurocode 7. Given the soil parameters and the loads considered, landslide remediation was carried out by constructing a 3m high reinforced concrete gravity wall of T-section which includes necessary drainage system. The thickness of the slabs, ie the plane of the wall, is 25 cm, while the base slab is 1.4 m wide. The landslide covered 90 meters of road length and the length of the built retaining wall at the site is 145 meters.