USACE December 2020 Update

USACE October 2020 Monthly Update

1 Diversion Inlet Structure Construction 

Structure includes 3-50 ft. wide Tainter gates. Placement of right dam walls and H-pile driving in stilling basin continues. Construction is 46% complete with a required completion date of 7 June 2023. Anticipated remaining schedule: 

  • 2020: Foundations/site work, control structure, dam walls. 
  • 2021: Concrete piers/abutments, control building. 
  • 2022: Install bridge deck, gates, and operating machinery. 
  • 2023: Paint gates, seed. 
  • 2024: Turf established. 

2 Wild Rice River Structure Construction 

Structure includes 2-40 ft. wide Tainter gates. Concrete placement for the dam walls continues and the control structure slab is complete. Construction is 14% complete with a required completion date of 22 October 2023. Anticipated schedule: 

  • 2020: Foundations/site work, control structure, approach walls, dam embankment. 
  • 2021: Dam walls, control building, dam embankment. 
  • 2022: Control building, dam embankment. 
  • 2023: Complete excavation, dam embankment, gate installation, seed. 
  • 2024: Turf established. 

3 Red River Structure Design 

Structure includes 3-50 ft. wide Tainter gates. The design of this critical-path feature remains on schedule. The 65% review is complete and the 95% is scheduled to begin late-April 2021. Final plans and specs are scheduled to be completed in September 2021. 

4 Southern Embankment – Reach SE-1 (Western Tieback) Design 

The final plans and specs were approved on 30 October 2020. Construction contract award is scheduled for 2nd quarter FY21. 

5 Southern Embankment – Reach SE-2A Design 

Detailed design continues and the 65% design review by the DA is scheduled to begin late-January 2021. Final plans and specifications are scheduled for November 2021. Rock Island District is also assisting with design for Reach SE-2B and detailed design is scheduled to start in January 2021. 

6 I-29 Raise Design 

Being designed by Houston Moore Group (HMG) and constructed by the Corps. The final plans and specifications were signed on 30 November 2020. The Prequalification of Sources was posted on 28 Oct. Award of a construction contract is anticipated in 2nd quarter FY21. 

7 Drain 27 Wetland Mitigation Project Design 

The 65% design review is complete and the 95% is scheduled to begin early-March 2021. Award of a construction contract is scheduled for September 2021. 

8 Geomorphology Surveys 

The final round of pre-project surveys is complete and a final report is due in Spring 2021.