Backbone Construction emerges as L1 bidder for implementation of Bemetara-Mungeli Road Widening and Strengthening Project in Chhattisgarh September 22, 2025 | Awarded, Project Updates Backbone Construction Private Limited has emerged as Lowest Bidder (L1) for implementation of the Bemetara-Mungeli Road Widening and Strengthening Project (SH-7). This content is restricted.