Infrastructure Building Construction

in Southern/Central Illinois and the St. Louis Metro Area

Past Projects in the Southern/Central Illinois and the St. Louis Metro Area

Our portfolio includes a broad range of infrastructure projects throughout the Southern/Central Illinois and the St. Louis Metro region. With extensive experience in new construction, improvements, and expansions, we understand the critical role infrastructure plays in supporting communities and economic growth. Our team works closely with public agencies, engineers, and stakeholders to ensure projects meet regulatory standards, safety requirements, and long-term performance goals. We provide accurate cost estimates, coordinate permitting, and maintain clear communication throughout every phase. With a focus on durability, efficiency, and quality, we deliver infrastructure projects that stand the test of time.

Inside a water treatment facility, tanks, pipes, and walkways under a metal roof.

Water Reclamation Facility UV

Belleville, IL

A blue cylindrical tank is lifted by a crane into a building under construction.

Wastewater Treatment Plant

Sparta, IL

Aerial view of a wastewater treatment plant with several tanks and buildings, next to a highway.

Wastewater Treatment Plant

Caseyville, IL

Exterior view of a water treatment facility with a building, machinery, and a gravel lot.

Wastewater Treatment Plant

Trenton, IL

Modern building with orange accents, glass windows, and a cell tower in the background, set on a grassy hill.

Water Treatment Plant

Collinsville, IL

Large circular water treatment tanks, gray concrete, with surrounding structures.

Water Reclamation Plant

Belleville, IL

Ready to Begin Your Project?

At Korte & Luitjohan Contractors, Inc., we're ready to help you with your construction needs. Whether you're in the St. Louis Metro area, South Central Illinois, or Southern Illinois, our team will provide you with a smooth construction experience. Reach out to us today to get started on your project.