Irving Park Road & Union Pacific Railroad Relocation


Chicago Department of Aviation


Chicago, Illinois

Construction Cost

$6.6 Billion (Total Project)

Key Staff

Ross Anderson, PE
Brad McMullen, PE
James Outlaw

BB&A provided conceptual level engineering for the relocation of Irving Park Road and the Union Pacific Railroad around the south airfield reconfiguration. The final deliverable, a Project Definition Document (PDD), includes documentation for the alternatives studied and decisions leading to the preferred alternate. The study, requiring close coordination with the railroads and IDOT, required uninterrupted services for the airport operations as well as rail and vehicular traffic. BB&A developed and evaluated various alignment and profile alternatives for all of the various transportation modes involved (highway, rail, and aviation) subject to numerous operational constraints associated with each mode. BB&A performed or directed the development of bridge, type and sizing studies, retaining wall feasibility studies, geotechnical investigations, location drainage studies and intersection design studies. BB&A participated in construction cost estimating and worked with the OMP to determine overall project phasing, construction contract packaging and construction schedules. BB&A oversaw the final plan development and construction in a project engineering oversight role as each construction contract package was finalized by follow-on consultants.