Case Study: Delay Due to Utility Relocation Conflicts on Chicago Subway Project (Illinois, 2016)

Project Overview
• Name: Chicago Subway Extension
• Location: Chicago, Illinois
• Year: 2016
• Project Size: $900 million
• Scope: Extension of urban subway tunnels and stations
• Lead Agencies/Contractors: Chicago Transit Authority (CTA) /

Category of the Issue, Problem, or Challenge
• Utility Relocation
• Project Delay

Summary of the Issue, Problem, or Challenge
Unexpected utility conflicts with water, gas, and telecom lines caused work stoppages and redesign efforts.

Root Cause Analysis

• Incomplete Utility Mapping: Existing utility records were outdated or inaccurate.
• Poor Coordination: Limited early engagement with utility companies.
• Complex Urban Environment: Dense infrastructure made relocation challenging.
• Approval Bottlenecks: Utility relocation permits and coordination took longer than anticipated.

Impacts Due to the Issue, Problem, or Challenge

• Delay of 7 months.
• Increased costs for redesign and utility relocation work.
• Schedule disruptions across multiple construction packages.

Corrective Actions Taken

1. Conducted detailed utility surveys prior to construction.
2. Established early coordination committees with utility providers.
3. Streamlined permitting and approval processes for relocations.
4. Integrated utility relocation sequencing tightly with construction schedule.

Lessons Learned

• Accurate utility data is essential for urban infrastructure projects.
• Early and ongoing utility coordination reduces conflicts and delays.
• Streamlined processes accelerate utility relocation.

Audit & Prevention: Project Control Questions to Ask on Future Projects to Help Control the Situation

• Are utility maps verified and updated before construction?
• Is there early and continuous engagement with utility owners?
• Are utility relocation permits planned and tracked effectively?