ASCE’s Civil Engineering Magazine featured a comprehensive article about the recently completed I-35W Stormwater Storage Facility in Minneapolis, MN. The article, titled Flood Fixer, describes the 5-year project completed through a Construction Manager/General Contractor delivery method.
The project was constructed in in a narrow strip of land between I-35W and sound barrier near a dense urban residential area. Given the tight space constraints at the site, an underground storage structure with the capacity of 14.7-acre-ft (4.79 million gallons) consisting of a series of 6 interlocking diaphragm walls approximately 46-ft in diameter and 80-ft deep in the ROW of I-35W was constructed. The facility’s six interconnected cells, each 42-ft in diameter, can store a total of 4.5 million gallons of stormwater. Minnesota DOT retained the team of Brierley Associates, Barr Engineering, and TKDA to develop and design this solution. Project construction was provided by Kraemer/Nicholson Construction Company JV.
This project won the American Public Works Association Public Works Project of the Year in the Environmental $25 to $75 Million category
Watch a flyover of construction activities at the project site! Video courtesy of Minnesota Department of Transportation.