This project involved concrete road reconstruction of 5.6 miles of I-75 in Monroe County, Michigan, including the reconstruction of two interchanges and two MDOT bridges over waterways. As a subconsultant, NCI work included all hydraulic analysis and design, County drain culvert design (19 locations), median storm sewer design and layout, roadside ditch design, temporary drainage design, stormwater quality treatments (detention/retention), and MDEQ permit application and approval. This project was a pilot for the new MDOT Stormwater Management Plan including detention/retention of increased impervious areas and treatment of the first flush. Part of our design included design of ditches for treatment of stormwater prior to discharge into the County drains.
CLIENT: HNTB/Michigan Department of Transportation