Chicago Transit Authority, Red-Purple Modernization

Chicago Transit Authority, Red-Purple Modernization

Project Overview

This project consisted of the reconstruction and improvement of an existing operating corridor that starts north of the Belmont Station on the Red Line and continues to the Linden Terminal. The Lawrence, Argyle, Berwyn, and Bryn Mawr Stations will be completely rebuilt, as will all of the tracks and support structures for more than a mile adjacent to the stations.

The stations are ADA accessible and include wider platforms, better lighting, and modem amenities. The project also constructed a Red-Purple Bypass (RPB) north of the Belmont Station, with trains to modernize the century-old Clark Junction. The bypass, which carries northbound Brown Line trains up and over Red and Purple Line tracks, eliminates the need for trains to stop and wait for other trains to cross, thereby allowing CTA to significantly increase the number of trains it runs along the Red Line, reducing overcrowding and meeting growing demand for transit service.

For this project, Envision reviewed the client master schedule and analyzed the contractors monthly schedules and overall cost and resource review on a quarterly basis. In addition, Envision provided meeting support based on client needs.


Project Information

Owner Federal Transit Administration (FTA) Region V / Chicago Transit Authority (CTA)
Project Start January 2019
Project End March 2024
Project Cost $2.1B
Envision’s Role
  • CPM Scheduling
  • Construction Schedule Review
  • Construction Schedule Analysis
  • Review of Project Schedule Updates
  • Cost and Resource Review
  • Meeting Support