The main aim of our project is to utilize those plastics and fly ash in the manufacturing of bricks. In this project, plastic bricks were cast with different proportions with quarry dust & fly-ash. The plastic percentage is varied by 5%,10%,15%,20% with the casting of quarry dust and fly-ash was constant. The tests are conducted compressive strength test, water absorption test, and efflorescence test. Here the strength properties of plastic bricks comprising of waste plastics, fly ash as the constituents and the design considerations for pavement block incorporating waste plastic bags is presented. A comparative economy, etc. compression strength test was performed on the plastic brick and its strength was found to be 6.66 N/MM2 which is higher than red clay bricks which have a compressive strength of 3-5 N/mm2.