National Highways Authority of India invites bids for CS for Prep. for DPR for New Alignment Proposed for impro 6L PC of Port to NH06 by UG UW Tunnel twin TT of tentative L9KM EC of tentative L4km and connecting roads TL3 km RoB from NS Dock Area of KDS to Salap Howrah connect. to NH06 in West Bengal in SOUTH WEST, DELHI. Submission Deadline: 15-12-2025 11: 00: 00. Submit your proposal before the deadline.