Chicago-O'Hare International Airport B&C Tunnel Leak Repair Project
Ardmore Roderick was tasked with repairing water infiltration in the pedestrian tunnel between concourses B and C and taxiway pavement. The Task Order was issued to investigate, analyze and conceptually propose a design solution to various impacted areas of improvement. Construction bid documents were prepared for the system improvements identified.
Operating in an active pedestrian corridor was a challenge for this project. In addition to the operational challenges within the tunnel, many of the joint repairs were on the concourse and the work adjacent to or on active gates had to be carefully planned and executed so as not to impact airline operations. This was a traditional design-bid-build project rather than CMAR. Along with the operational challenges, it was difficult to anticipate the required repairs, as many of the joints were not accessible until the construction started. Additionally, as some of the structure was exposed it became clear that the structural supports were compromised as well as the expansion joints and sealant. Ardmore Roderick worked through the issues and changed conditions with the design team, stakeholders and the contractor and was able to deliver these important repairs for the airport. Baggage handling systems and the “disco tunnel”, as it is called, do not mix well with water, so it was critical to get these repairs completed to avoid disruption to service. This project was completed on time with minimal disruption to airline and airport operations.
The changes recommended in the design and investigation phases were then implemented. The apron pavement replacement, approximately 50,000 square yards, was coordinated to minimize the impacts to the operation.