


Project Description
Client: CTA – Chicago Transit Authority
Location: Chicago, IL
Completion Date: 2023
John Burns removed and replaced the aging diamond crossover track and eight expansion gaps in the CTA Blue Line’s Kimball Subway. The work, completed over nine 54-hour weekend shutdowns with full service restored after each, required meticulous planning to minimize disruptions. This critical upgrade, including the replacement of the original 50-year-old Belmont crossover, supports increased ridership and ensures continued reliable service on one of the CTA’s busiest lines.
Scope of Work
- Installation of new diamond crossover track.
- Replacement of approximately 1,200 linear feet of track.
- Construction of new underground and above ground traction power ductbanks and cabling.
- Upgrades to signal systems and switch machines.
- Installation of new underground drainage infrastructure.