Presolicitation DEPT OF DEFENSE DEPT OF THE ARMY is seeking construction services for Lock & Dam 25 New 1,200 ft Lock in MO, USA. The purpose of the project is to improve the existing lock and dam infrastructure. The government is pursuing an Early Contractor Involvement (ECI) via Integrated Design and Construction (IDaC) delivery method. The project includes a Draft Request for Proposal (RFP) and a Pre-Solicitation Conference to update industry on the design efforts and delivery method.