This thesis deals with the recycling of building materials for road construction in Bulgaria. A comparison between the situation in Bulgaria and Austria has been made and various problems in the two countries have been described. This paper gives a practical overview of the potential and technologies for reuse of recycled construction waste materials for road construction. A large amount of waste is produced during the construction and rehabilitation works of roads. These activities offer a great potential for use of recycled construction waste materials. There are many standards, Euro norms and technical specifications in Western European countries and in Bulgaria that determine the use of recycled material. The method in the use of recycled materials in Bulgaria is still limited. In the Bulgarian construction practice, milled asphalt is reused without further processing, primarily as a hunting ground for temporary or for service roads, as well as drainage layers of parking lots or storage areas. Concrete waste from demolition of concrete roads has a very high potential for recycling. This material contains recycled material, rock and cement stone, which are inert materials. The recycling technology is relatively simple (breaking down of large pieces, shredding, cutting of metal materials, screening and possible cleaning) and the recycled material can be used for the same purposes as the natural resources. The treatment of excavated soil in Bulgaria is not well determined by law. In most cases, the excavated materials are disposed in landfills for construction waste, but also often in landfills for household waste. In many communities, the demand of excavated materials exceeds considerably the amount of their production. The examples of good practices in Austria serve for improvement of the Bulgarian waste management.