Work commences on Balason River Bridge under Shivmandir-Sevoke Army Cantonment road Project in Sikkim August 4, 2023 | News & Developments, Project Updates, Under Construction The Public Works Department, Sikkim (PWD) has commenced construction work on Balason river Two Lane Bridge under the Shivmandir-Sevoke Army Cantonment Four/Six Laning Road Project (NH10). This content is restricted.