Minnesota Department of Transportation

511 Travel Info

Henderson Flood Feasibility Study


Flood Mitigation Study Open House

Thanks to everyone who attended the May 17 open house. Open house materials posted below:


MnDOT has partnered with the City of Henderson, Sibley County and LeSueur County to conduct a flood feasibility study. This feasibility study will evaluate the bridges and approach roads over the Minnesota River for Hwy 19, Hwy 93, and Sibley County Road 6 to determine what capital improvements would be necessary to minimize road closures and/or add capacity due to flooding events for the existing river crossings and their approach roads.


Provide a safe and accessible, 10-ton route into and out of Henderson to limit the length of detours and impacts to businesses during high water events.


During 100-year flood events, access to the city of Henderson is severely restricted, necessitating lengthy detours and impacting local businesses and regional traffic.


  • Study alternatives that would raise the three routes that serve Henderson that are susceptible to seasonal flooding of the Minnesota River (Hwy 19, Hwy 93 and CR 6)
  • Include an additional alternative that would stabilize the Hwy 19 roadbed to act as a low-head dam
  • Look for better detour route
  • Look at traffic, environmental impacts, costs, benefit-cost, feasibility, geotechnical and schedule