As part of the federal environmental review process for Red and Purple Modernization Program (RPM), the Chicago Transit Authority (CTA) published the second of two federal documents, Environmental Assessments (EA), that are associated with Phase One of RPM. These documents are an important step in the process of informing the public and gathering feedback about this critical project, all of which contributes to the project’s development to allow the CTA to apply for federal funding for RPM.
This EA published analyzes the CTA’s proposal to construct a fifth-track bypass that would allow northbound Brown Line trains to Kimball to travel over Red and Purple line trains north of Belmont station – where the Red, Brown and Purple lines currently intersect.
This project would allow the CTA to add trains to meet current and future ridership needs.
CTA estimates that by building the bypass, it would be able to add up to eight more trains per hour during rush hour immediately on the Red Line alone, and ultimately serve an additional 7,200 passengers per hour on all three rail lines.