Strategically located 15-miles northwest of Chicago is this Class I railroad's largest freight and classification yard in the United States. As part of this multi-phase project, Patrick provided final engineering design for the reconfiguration of the existing classification yard to accommodate the expansion of the intermodal terminal. Detailed staging/phasing plans were developed, and extensive coordination required with the client to ensure that yard operations were not impacted by construction. Phase two lowered the crest of the existing gravity hump by approximately ten feet and converted the hump yard to a state-of-the-art mini-hump with Dowty™ retarders. During Phase three, Patrick designed a new yard office tower complex for the railroad’s Division Headquarters, as well as other facility buildings, including a switch control booth, and three intermodal yard office buildings. Various disciplines contributed to this effort, including survey, drainage/hydraulics, environmental permitting, civil, track, structures, geotechnical, and lighting.