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Contact

Illinois

Offices

ILLINOIS

1604 Eastport Plaza Drive, Suite 106
Collinsville, IL 62234
618-344-4142

Illinois skyline. Illinois skyline.

BUILDING WITH 
YOUR NEEDS IN MIND

Strategically located along the I-255 corridor just minutes from our company headquarters, McCarthy’s Illinois office supports the growth and expansion needs of Southern and Central Illinois.

Valentine Erin

Erin Valentine

Vice President

1604 Eastport Plaza Drive, Suite 106
Collinsville, IL 62234

Person inspecting construction work.

MAKING A DIFFERENCE

When you build with us, you are assured our teams enjoy access to the incredible resources of a leading national builder while providing the supportive family feel of a close-knit local business. Our employee-owners take great personal pride in producing high-quality work and lasting, impactful results. 

Experience Matters

From hospitals and schools to transportation, renewable energy, water and wastewater systems — we're an Illinois construction company who partners with you to build the high-quality facilities you need to keep your community ahead of the pace.

Wide angle outdoor image of the buildings and piping Wide angle outdoor image of the buildings and piping
Exterior view of the Good Samaritan Regional Hospital in Mt. Vernon, IL. Exterior view of the Good Samaritan Regional Hospital in Mt. Vernon, IL.
Outdoor drone image of the entire plant Outdoor drone image of the entire plant
The entrance of the Student Center building at SIU Carbondale. Exterior view of the Student Center on SIU's beautiful Carbondale campus.
Exterior view of Mount Vernon Township High School Exterior view of Mount Vernon Township High School
Outdoor image of a water being treated Outdoor image of a water being treated

NRG Energy Powerton Units 

Pekin, IL

SSM Health Good Samaritan Hospital 

Mount Vernon, IL

Center Ethanol Plant 

Sauget, IL

SIU Student Services Building 

Carbondale, IL

Mount Vernon Township High School 

Mt. Vernon, IL

ConocoPhillips Wastewater Treatment Plant 

Roxana, IL

JOIN US IN ILLINOIS AND ACROSS THE MIDWEST

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