The Union Pacific (UP) Kress–Peck 3rd Mainline Project was the final phase of expanding the West line between West Chicago and Geneva, IL, a corridor carrying over 100 daily freight and commuter trains. The sixmile expansion occurred within a narrow, rightofway, full of utilities, with steep embankments, limited access, and continuous livetrack operations, requiring extensive coordination with Metra, the City of Geneva, and UP forces.

The structure work on the project was significant as the narrow corridor required a number of different retaining wall systems and bridges to bring the third track through Geneva. The new structures, with thirteen (13) being constructed on a design-build basis, consisted of:

• Single Span Steel Deck Bridge over IL 31 in Geneva on drilled shaft foundations.
• Seven (7) Span Deck Plate Girder (DPG) and Precast Concrete Deck over the Fox River
• Twenty-one (21) Retaining Walls - Over 9,000 Feet Long and standing up to 30ft above ground.
• Complex Earth Retention systems supporting live tracks which were constructed over 40 feet above ground.

The Civil scope involved managing substantial elevation changes to move over 150,000 Cubic Yards of Dirt, with work on both sides and in close proximity to the two (2) active mainline tracks, and drainage driven by the new track geometry. Other improvements included 16 drainage culverts, including jack & bored pipes up to 84 inches in diameter, plus two road crossings, three commuter parking lots, and two warming shelters.

ICC was able to successfully complete this project adjacent to two live tracks, with minimal impacts to the City of Geneva, Metra riders, and the general public, while keeping over 100 commuter and freight trains moving with minimal disruptions daily. The project further strengthened our reputation as a valuable partner with Union Pacific.