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RISING TO THE CHALLENGE

At Complex Structures Group, we embrace the most challenging, high-profile projects and consistently deliver above and beyond our customers’ expectations — safely and on-schedule and with the highest quality.

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DIFFERENTIATORS
Safety
SAFETY

Our # 1 Priority

At Complex Structures Group there is no compromising on safety. CSG’s safety managers administer an industry leading safety program that focuses on daily training and oversight including tool box talks, pre planning meetings, site-specific plans, lifting plans and the completion of daily safety logs.

Collaborate
COLLABORATION

Working together from the start

Our commitment to our customers extends far beyond our core field services.  From initial bid to project completion, CSG approaches each unique structure with planning and design collaboration that ensures our customers’ success in quality and cost savings. 

Quality
QUALITY

The details make the difference.

Quality is the key component to every structure we assemble.  It is core to our company’s DNA and shines with every project completed.  Take a look at our completed projects and you’ll be impressed as well.

CAPABILITIES
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CSG

In 2022, Chicago Steel changed its name to Complex Structures Group to better reflect its growing engineering and construction capabilities.

STEEL ERECTION  
PRECAST CONCRETE
TOWER CRANE SERVICES
PRECONSTRUCTION ENGINEERING AND DESIGN ASSISTANCE

Complex Structures Group has over 25 years of expertise in the following areas:

FEATURED

FEATURED WORK

  TIMELAPSE  

150 N. Riverside

This 54-story iconic structure is located on the west bank of the Chicago River is the winner of multiple design and engineering awards.

PROJECT DETAILS

Apple Flagship Store

1998

1,000+

2,475,149

YEAR ESTABLISHED
PROJECTS
COMPLETED
MAN HOURS WORKED SINCE 2003
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