MnDOT, BNSF and the City of Wilmar were investigating preliminary alternatives to add 2.7 miles of track along CSAH 55 to connect Morris and Marshall subdivision tracks. A realignment of TH 12 and other local roads is required to add the track and two alternative designs were proposed. The proposed road designs include a bypass, overpass, and raised intersections.  Rani was a subconsultant on the design team, responsible for the drainage analysis and design for these preliminary alternatives.

Rani provided a hydraulic design and analysis memo for each of the design alternatives. The design team developed a drainage overview map and layout using MnDOT, MPCA, and City of Willmar standards.

Professional services included:

• Watershed delineation and hydrologic analysis
• Comprehensive modeling of entire contributing watershed
• Identification of stormwater ponding needs and recommended locations
• Preliminary pond, ditch, and culvert design and sizing
• Pond outlet design to meet rate control requirements
• Hydraulic design and analysis memo
• Drainage Overview Map and Layout
• Coordination with roadway design team and BNSF railroad design team