About Us

Johnco Construction, Inc. has been providing construction services since 1986. We strive to deliver quality and work to create relationships with everyone involved. With a wide variety of experience in several markets, we can serve different needs and your project will be managed professionally and diligently. The importance of the project to each Owner is understood by Johnco from day one. Creating an atmosphere based on integrity makes our clients know their projects are in good hands when they hire Johnco.

Our Company

Johnco Construction

Our company traces its roots to 1986, when it was started by John Onopa. Johnco Construction strives for excellence. We serve communities and industries by self-performing complex engineering and construction projects. In a teamwork environment, we operate in a fair, cost effective and professional manner, while caring for our employees and their families.

We have built relationships with many owners, designers, subcontractors, and vendors over the years. Our focus is to maintain these relationships, and always treat people fair. Safety and pride are the foundation of our company operations. Building safe is our number one goal, and taking pride in everything we do creates our ladder for success.

Leadership Team

Johnco Construction
Bob Berns

Bob Berns went to Southern Illinois University, and obtained a Bachelor of Science Degree in Education. Upon graduation and working in the teaching field, he ended up looking for a change. Making a drastic one, he started working in commercial construction in Alaska throughout the 1970’s, where he learned the ins and outs of the business. In 1981, he moved back to Illinois to take over the helm at Berns Concrete from his father. After owning and operating the ready-mix and block manufacturing business, while also operating Berns Construction, Bob decided sell the businesses. In 1998 he joined Johnco Construction, and took over ownership of the firm in 2012.

Bob is very involved in all company operations, ensuring each project is delivered on time and budget. He enjoys working, but he also loves to spend time with his family including 14 grandchildren that keep him busy.

Johnco Construction
Paul Berns

Paul Berns, one of Bob’s sons, went to Southern Illinois University and obtained a Bachelor of Science in Construction Management from the School of Engineering. Paul worked several internships throughout college and gained large, multi-million dollar project experience on airport terminal additions in Dallas, TX and Baltimore, MD working as a Field Engineer. His junior year, he took a position as an assistant superintendent on the $365 million new Busch Stadium, home of the St. Louis Cardinals, including demolition of Busch Stadium II. He eventually grew into a Project Superintendent position and upon graduation, moved to New York for three years and managed construction at Citi Field, the $800 million home of the New York Mets. Finally, he ended up back in the Midwest working on the Kansas City Royals $250 million stadium renovation.

Upon completion, Paul decided to join his father’s business where he began as a Union carpenter, then Project Manager/Estimator and was soon promoted to Vice President. Paul estimates with Bob, while being responsible for all company field operations and management. Most of all, Paul enjoys spending time with his wife and son. As a new father, he is eager to teach his little boy.

Johnco Construction
John Onopa

John Onopa, our company’s namesake, started as an ironworker and founded Johnco Construction, Inc. in 1986. He quickly grew the company into a multi-million dollar commercial construction firm. In 2002, John retired to enjoy golf, snowmobiling, fishing and entertaining friends and family. In 2012 John passed away, and we are proud to continue the company in his name.