Fluor Corp. and its joint venture partner, Walsh Construction Company, have reached Substantial Completion on the Chicago Transit Authority’s $2.1 billion Red and Purple Line Modernization Phase One Project.
According to a release, the project is the largest completed capital project in CTA’s history. Officials said the recently achieved milestone reflects the dedication and collaboration of an exceptional project team, including Fluor, Walsh Construction, Stantec for design, Hitachi for signaling and Meade for electrical contractor.
Since commencing in 2019, the program has modernized and replaced just over two miles of 100-year-old elevated track between Lawrence and Bryn Mawr, and rebuilt four stations into modern, fully accessible facilities with enhanced passenger flow, security and signage.
The project also includes the Red-Purple Bypass, a new elevated bypass for the Brown Line that eliminates track conflicts and improves throughput for Red, Purple, and Brown Line service. In addition, 11 miles of new digital track circuit signaling have been installed, increasing capacity today while enabling future enhancements in signaling and rolling stock.
The project was executed while maintaining rail transit service along the alignment. The new stations and tracks fully opened in the summer of 2025, with final completion for RPM Phase One scheduled for November 2026.
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