Chicago Transit Authority (CTA)


Chicago, Illinois


Rail Transportation: System-wide Elements, Systems & Control Centers


Program/Construction Management Services: Construction Management.

CTA O’Hare Branch to Jefferson Park

STV is providing construction management services for the signal system replacement on the Chicago Transit Authority’s (CTA) Blue Line O’Hare Branch between Jefferson Park and O’Hare Stations. This design-build replacement is the largest project procured for CTA’s Your New Blue initiative, which strives to improve ridership, increase the frequency of service, and enhance the user experience on the authority’s Blue Line.

Because the Blue Line is within the Kennedy Expressway Right-of-Way to O’Hare International Airport, a key challenge for the program will be coordinating track access and highway lane closures so as not to adversely impact transit riders or motorists who use the corridor every day. As part of its construction management plan, STV integrated advanced audio frequency track circuit train control technology that incorporates advanced scheduling techniques.