US Army Corps of Engineers
Rock Island District

District Projects

LaGrange Lock, Illinois Waterway (Major Rehabilitation/Major Maintenance)

Published March 8, 2019

Project Manager
(309) 794-5168

Versailles, Illinois

LaGrange Lock, located on the Illinois Waterway at river mile 80.2, was put into service in 1939 and is in need of a major rehabilitation of lock concrete, electrical and mechanical systems. The lock went through rehabilitation in 1986 to 1988; it included minor concrete repairs, repositioning lock machinery and installing a traveling kevel. For 70 years, the lock has been exposed to multiple freeze/thaw cycles and flooding causing a gradual but incessant degradation of the lock components.

Frequent flooding and temperature extremes combined with high usage has resulted in significant deterioration of lock concrete and the decline of mechanical and electrical systems performance and reliability. The vertical concrete has deteriorated to the point that sections have had to be removed and/or threaten to fall into the lock chamber. Barges can become wedged under the armor, resulting in a dangerous situation for deck hands and lock personnel and potential damage to the barges. Hazardous working conditions exist due to deteriorated horizontal concrete on the land and river walls of the lock chamber. The mechanical and electrical systems require frequent patching and labor intensive repairs. Parts are difficult to obtain and have to be specially made in many cases. The probability of failure of the mechanical and electrical systems requiring extensive and expensive repairs in the next several years is very high. The potential at any time for an incident to occur due to deteriorated lock concrete in which the lock had to be closed for more than a week is very probable with the potential increasing every year the lock concrete is not rehabilitated.

The rehabilitation work is funded by both Construction (designated Major Rehabilitation) and O&M (designated Major Maintenance) appropriations in a single contract for efficiency.

A Rehabilitation Evaluation Report was approved in August 2005. New start was received in FY 2018 along with approval for use of the continuing contracts clause.  

Project awarded at the beginning of FY 19 (Nov 2018). 

CG - Construction General
River and Harbor Act of 1930

Summarized Project Costs

Estimated Federal Cost  $99,745,000
Estimated Non-Federal Cost  $33,755,000
Estimated Total Project Cost $133,500,000
Allocations Prior to FY 2019 $25,223,000
FY 2019 Allocation $77,410,000
FY 2019 Total Capability  $30,867,000

Major Work Item Current Year
FY 2019:
Contract Awarded Nov 2018. Initiate construction effort for major rehabilitation/major maintenance of the facility.