The secondary use of polyolefin plastics (obtained as a result of solid municipal waste processing) in the production of bitumen materials has been studied. It has been established that integration of polymer wastes, dissolved in spent industrial oil, into bitumen binder allows to increase its heat and frost resistance, thus expanding the plasticity range of bitumen. The potential possibility of using polymer wastes in the production of bitumen materials for non-critical construction objects has been confirmed. The use of polymer wastes in bitumen production contributes to the development of a circular economy, within which materials are recycled and are used again in road construction, thereby reducing the impact on the environment.