Changing Riverine Environment

CFD Modeling of Rockery Walls in the River Environment

  • Cezary Bojanowski (Argonne National Lab)
  • Steven Lottes
  • Bart Bergendahl (FHWA)


In 2010 and 2011 Minnesota experienced 3 major flooding events in multiple major watersheds. These events (along with other recent flooding) triggered the creation of a flood mitigation bonding program to fund flood mitigation projects on Minnesota state highways in the 2012-2016 fiscal years.

One of the projects selected was the 101/61 Southwest Reconnection Project (Hwy 101 Flood mitigation project). The Minnesota River spreads across a broad flat valley during frequent floods, inundating many roadways crossing the floodplain. MnDOT and Local agencies have dealt with increasingly frequent flooding along the Minnesota River, with significant traffic impacts, particularly in the southwest part of the Twin Cities metropolitan area.

A MnDOT study completed in 2011 identified potential solutions to address the recurring congestion due to seasonal flooding in the southwest metro. The Highway 101 floodplain bridge was selected as the preferred alternative. Hydraulic analysis (including 2-dimensional hydraulic modeling) and final design has been completed and construction is scheduled to start the summer of 2014. There were several unique project challenges including significant project coordination between project partners (MnDOT and local agencies), and the need for an archeological dig of historic artifacts within the project area.

This presentation will review how floods in this area have been managed in the past, discuss the options considered in a recent flood mitigation study and go over the design of the selected permanent flood mitigation solution. Additionally, this presentation will provide a brief overview of the MnDOT flood mitigation bonding program to date.

How to Cite:

Bojanowski, C. & Lottes, S. & Bergendahl, B., (2014) “CFD Modeling of Rockery Walls in the River Environment”, National Hydraulic Engineering Conference 2014 1(2014).

Rights: Copyright © 2014, Cezary Bojanowski, Steven Lottes, and Bart Bergendahl

Publisher Notes

  • Panel moderated by Steve Sisson, DDOT.
  • About the Presenters: Cezary Bojanowski Biography: Dr. Cezary Bojanowski received his Master degree in civil engineering from Warsaw University of Technology, Poland in 2005. He received his Doctoral degree also in civil engineering with specialty in computational analysis of structures from Florida State University, Tallahassee, USA in 2009. His main research interest is in application of computational multi-physics in analysis of transportation related problems. His current research areas include 3D CFD modeling of free surface flows applied to transportation infrastructure, fluid structure interaction in the performance of bridges and response of the structures to extreme loadings. He also works on crashworthiness and occupant safety related research. Cezary has published over 30 papers in conference proceedings and journals and technical reports. He currently works as a Mechanical Engineer at the Transportation Research and Analysis Computing Center, a part of Argonne National Laboratory in Illinois, USA. Bart Bergendahl Biography: Bart Bergendahl is a Senior Hydraulic Engineer with more than 30 years of experience in the fields of hydrology, hydraulics, sediment-transport and scour analysis, river mechanics and stream stability, fluvial geomorphology, and urban drainage system analysis/design in both the public and private sectors. He began his hydraulic engineering career with the Federal Highway Administration in 1977 in what was then called the Eastern Direct Federal Division Office in Arlington, VA. He holds a Masters of Science degree in Civil Engineering from Colorado State University. His post-graduate and professional work have focused on hydraulics, sediment transport, river mechanics, and scour. In 1994, Bart left Federal service to join the private water resources firm of Simons, Li & Associates, Inc. in Phoenix, Arizona, where he remained until returning to FHWA in 2002. He is a registered Professional Engineer in Arizona and Illinois, and currently serves as the Hydraulics Discipline Leader for the Federal Lands Highway Division of FHWA in Lakewood, CO.

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Published on
22 Aug 2014
Peer Reviewed