Plastic waste management remains a challenge for city authorities in Ghana. This is due to high usage of plastic products coupled with the inadequate infrastructure for waste management. Utilization of some of these waste plastic materials in different fields could have numerous benefits including the reduction in the environmental challenges associated with the disposal of plastics. This paper presents an experimental investigation into the workability and strength properties of concrete using different percentages of shredded waste plastics as partial replacement for natural coarse aggregate. To achieve this, a standard mix design for a 25MPa concrete was used. One control mix and four different concrete mixes with varying percentages of shredded waste plastic (5%, 10%, 15% ,20%) by weight of coarse aggregate were used to produce 72 cubes, 36 cylindrical specimens and 18 beams. These specimens were cured and tested for compressive strength, split tensile strength and flexural strength respectively per the standards. From the experimental results obtained, workability of concrete decreased significantly with increase in proportion of shredded waste plastic aggregates. The results on strength properties indicate that compressive strength, split tensile strength and flexural strength also decreases with increase in proportion of shredded waste plastics. However, at 28 days, the target strength of 25MPa was achieved by the control concrete mix and the 5% shredded waste plastic concret. Also, concrete beam specimens containing shredded waste plastic aggregates exhibited a more ductile failure behaviour compared to the concrete without waste plastics aggregate.