Lock & Dam No. 25

Lock and Dam No. 25
Lock Dewatering/Embedded Metals
St. Louis District

Partnering Lesson:

  • Recognition of the importance of 24-hour communication to resolve problems quickly and practically.
  • Daily Partnering meetings encouraged open and honest communication.

Project Description
The Lock rehabilitation was the installation of a deep well watering system beneath the lock floor, the installation and removal of the lock bulkheads, and the design, installation, and operation of an ice control system. A poiree dam and culvert bulkhead was also installed and damaged embedded metals were removed and replaced. Existing lock ladders were also removed and replaced.

Project Challenges:

  • Work was to be completed during a 77-day winter lock closure period.

Issue:
At the Partnering meeting, it was recognized that due to the nature of working 24 hours a day, seven days a week to complete the work during the closure period, quick resolution of problems was critical.

Benefits of Partnering:

  • Established working relationship between stakeholders.
  • Recognized stakeholder points of view.
  • Achieved stakeholder commitment with signed Partnering agreement.

Stakeholders:
St. Louis District Operations, Construction, Engineering, and Contracting, Massman Construction Company.