Chicago Transit Authority(CTA) Selects Ardmore for the O’Hare Blue Line Track Construction Renewal Project

Chicago — Ardmore, a regional engineering firm, will perform Resident Engineering with Supervision of a nine- member staff for Oversight of the CTA’s O’Hare Blue Line Track Construction Renewal Project. The project value is $100 million. The project involves overseeing CTA construction from the North Portal of the Kimball Subway to the O’Hare Subway Tunnel Station.

The total project includes activities over approximately 111,700 lineal feet of single track including the removal and replacement of all deteriorated oak track ties, worn out rails, fouled ballasts, and the entire 600 Volt DC contact rail(3rd rail) system within the entire project work limits.  The project also includes replacement of all existing mainline direct fixation(DF) fasteners and the removal of signal impedance bonds from their in-track location and re-installation to the outside of the track.

Ardmore Associates LLC is an engineering consulting firm specializing in complex infrastructure, transportation and major building projects. Established in 2003, Ardmore Associates was founded by principals who share over 100 years of collective experience in municipal and federal facility operations, management and development. Ardmore is comprised of over 100 professional, experienced employees ranging from engineers, architects, certified construction managers, scientists and engineering technicians offering expertise in surveying; program, project and construction management; construction inspection and consulting. As a MBE/WBE/DBE, Ardmore is a strategic partner to wide array of diverse clients who trust and know the superior value of our hands-on involvement and partnership that generates solutions to protect their interests. For more information, visit

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