I-65 Northwest Indiana Expansion Design-Build

In total, 75 lane miles and 16 bridges were under construction during either the 2017 or 2018 construction year. The project included drainage improvements, signage, and pavement markings. Paving totaled nearly 170,000 tons of hot mix asphalt and over 25,000 cys of concrete. Subgrade construction included an estimated 101,500 cys of soil stabilization. Over 31,500 lft of double-faced guardrail was installed in the median. Between structural and reinforcing steel, 2.6 million lbs were incorporated into contract work. The Kankakee River bridges were 3-span steel girder structures. The bridges are now single-span, 204’x8’ steel girder structures. Drainage construction included 33 detention berms, nearly 85,000 lft of underdrain and 47 new median inlet structures. American Structurepoint, as a subconsultant to HNTB, provided construction inspection services throughout the project. Project leadership reported directly to the INDOT LaPorte District area engineer. Construction costs were $62 million.