US Army Corps of Engineers
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District Projects

Illinois Waterway

Published March 10, 2020


Illinois Waterway


To maintain reliable navigation and avoid unscheduled long-duration closures on the Illinois Waterway (IWW), the locks need to undergo scheduled major rehabilitation and maintenance. LaGrange Lock is due for Major Rehabilitation in 2020, and Peoria Lock will be dewatered for routine maintenance at the same time.  Four locks on the IWW require the installation of bulkhead recesses to support maintenance dewatering efforts there, and new miter gates are also required at those four sites: Brandon Road, Dresden Island, Marseilles and Starved Rock. To install these miter gates, the locks need to be dewatered using the new bulkhead recesses, and replacement of the concrete sills and gate anchorages is required to accept the new gates.  Procurement of new miter gates requires significant lead time for fabrication.

Consolidated Closures for IWW Major Maintenance (MM) and ¬Major Rehab (MR)


• LaGrange MM/MR – up to 120 day closure – lock dewatering to rehabilitate the lock chamber and miter gate machinery

• Peoria MM – 87 day closure – lock dewatering for inspection, new bubbler system, new miter gate hydraulic cylinders

• Starved Rock MM – 120 day closure – lock dewatering to install 4 new miter gates plus sill and anchorages

• Marseilles MM – 115 day closure – lock dewatering to install 2 new miter gates plus sill and anchorages

• Dresden Island MM – 115 day restriction period (includes 21 day full closure) to install upper bulkhead recesses to prep for 2023 MM 


• Brandon Road MM – up to 115 day restriction period (includes 21-day full closure) to install upper bulkhead recesses to prep for 2023 MM dewatering

• Dresden Island MM – 90 day closure – lock dewatering to install 2 new miter gates plus sill and anchorages

• Brandon Road MM – 90 day closure – lock dewatering to install 2 new miter gates plus sill and anchorages*NOTE* – this schedule does not include other potential IWW closures for additional MM/MR work, currently unscheduled. MR evaluations are currently ongoing. Additional closures are not anticipated at this time. However, an additional closure at Brandon Road (GLMRIS project) may occur in later years,

if approved. Efforts to consolidate that closure plus any other currently unscheduled closures will be pursued.

Lead Times

The amount of time required for miter gate fabrication is approximately 2.5 years from time of contract award.

The LaGrange MM/MR contract was awarded in November 2018, which allows for sufficient lead time for fabrication and procurement of multiple items prior to the start of the closure.  


Summary of Assumptions

• Consolidated / concurrent closures are required to reduce negative economic impacts as much as possible.

• Preferred closure timeframe on the IWW is between 1 July and 31 October (if the closure timeframe for one project is moved, it will affect the other projects scheduled for closure that same FY).

• Funding is available.

• Timelines are assumed since not all designs are complete.

• Minimal effects of weather or emergency situations.

• Width restrictions are preferred over full closures.


We have met current contract award schedules and are on track for meeting future scheduled contract awards.  This schedule will meet lead times and 2020 closures timelines, pending timely receipt of FY20 funding.

Additional Information

Congressional Interest

Senators: Richard Durbin (IL), Tammy Duckworth (IL)

Representatives: IL-1 (Bobby Rush), IL-2 (Robin Kelly), IL-3 (Dan Lipinski), IL-4 (Jesus Garcia), IL-7 (Danny Davis), IL-11 (Bill Foster), IL-13 (Rodney Davis), IL-14 (Lauren Underwood), IL-15 (John Shimkus), IL-16 (Adam Kinzinger), IL-17 (Cheri Bustos), IL-18 (Darin LaHood)


OM - Operations and Maintenance

River and Harbor Act of 1930

Summarized Project Costs

Estimated Federal Cost  105.3M
Estimated Non-Federal Cost  N/A 
Estimated Total Project Cost  105.3M 
Allocations Prior to FY 2020 27M
FY 2020 Allocation  $33.3M
FY 2020 Total Capability  $45.3M

Note: LaGrange MM/MR funding is not included in the summarized project costs shown above.

2020 Consolidated Closures - Work Items

Dresden Island Lock Bulkhead Recesses 

Marseilles Upper Miter Gate Installation 

Starved Rock Upper/Lower Miter Gate Installation

Peoria Dewatering

Starved Rock Dewatering

Marseilles Dewatering

Dresden Island Upper Miter Gates

Brandon Road Upper Miter Gates

2023 Consolidated Closures - Work Items

Brandon Road Lock Bulkhead Recesses 

Dresden Island Upper Miter Gate Installation 

Brandon Road Upper Miter Gate Installation

Dresden Island Dewatering

Brandon Road Dewatering

Major Work Items Current Year

FY 2020: 

• Dresden Island Bulkhead Recesses contract awarded.

• Award Supply Contracts for dewaterings.

• Finalize planning for dewaterings.

• Begin the 2020 Consolidated Closures and dewatering of 4 locks.

• Award contract for Dresden Island and Brandon Road upper miter gate fabrication.