This article represents the assessment of environmental impacts, estimation of environmental impact value and environmental management plan of proposed six kilometre road construction project from Kalishuri to Surjomoni union at Bauphal in Patuakhali district. The entire study was conducted straightly in the field visit, Focus Group Discussion (FGD), Bangladesh Bureau of Statistics (BBS) and also getting information from union and upazila parishad at Baupahl. Identifying and analyzing the potential environmental impacts, impact value and preparing environmental management plan are the main objectives of this study. The key findings of this study include environmental impacts on vegetation, hydrology, settlement, agricultural land and soil, water and air pollution of the proposed area. The study reveals that the environmental impact value is -1(negative one) regarding three environmental factors named ecological, physic-chemical and human interest. The EMP designed to various components such as the construction EMP, noise and blasting management plan, dust reduction and prevention plan, hydrology and drainage management plan and vegetation management plan for this project. A proper environmental management plan can ensure the environmental sustainability of a project. The mitigating options of various impacts on the project are environmental friendly technology, conservation of road side plantation, agricultural lands and regional hydrology. Also, the mitigation measures would be sustainable and long term durable of the proposed road construction project. The EMP helps to complete an environment friendly project by providing sound management on environmental impacts and means of preventing or reducing those impacts.