PWD confirmed promotion to next year's second division when they emerged champions in Super League Group A of the Citycell Third Division Football League yesterday.
PWD defeated Tongi KC 1-0 in a play-off to determine the group winners after both finished on five points after three matches in their group.
Farhad Hossain struck the all important goal in the 55th minute at the Shaheed Birshreshtha Mostafa Kamal Stadium in Kamalapur.
Swadhinata KS are the other team to have confirmed promotion after winning Group B.
PWD and Swadhinata will play in the final on March 26 for the championship.