11 firms submit bids for providing AE services for two packages of Silchar-Vairengte-Sairang Road Project April 15, 2024 | Project Bidders, Project Updates A total of 11 firms have submitted bids for providing authority’s engineering (AE) services for construction of Silchar-Vairengte-Sairang Four Laning Road Project (NH-37, NH-306). This content is restricted.