The use of waste polythene and rubber as bitumen modifiers has gained significant attention in recent years due to the environmental concerns associated with their disposal. This research paper aims to investigate the effects of waste polythene and rubber on the physical and rheological properties of bitumen The study includes the preparation of modified bitumen samples by adding different proportions of waste polythene and rubber to bitumen. The samples were then tested for their physical and rheological properties such as softening point, penetration, viscosity, and ductility The results indicated that the addition of waste polythene and rubber significantly improved the properties of bitumen. The modified bitumen samples showed an increase in softening point, viscosity, and ductility, and a decrease in penetration. Moreover, the study also suggests that the optimum dosage of waste polythene and rubber should be determined based on the desired properties of modified bitumen The results of this study suggest that the use of waste polythene and rubber as bitumen modifiers can be a sustainable solution for the disposal of waste materials while improving the properties of bitumen .