About Us
If you’re committed to getting the job done right, paying attention to the details, and building a better Iowa, we’re interested in hearing from you. At Calhoun-Burns & Associates, A Kleinfelder Company, we treat our employees like family, creating a safe, supportive, and enriching work environment.
Calhoun-Burns Joins Kleinfelder
Calhoun-Burns & Associates and Veenstra & Kimm joined Kleinfelder in April 2025. Founded in 1961, Kleinfelder is a leading engineering, design, construction management, construction materials inspection and testing, and environmental professional services firm. Kleinfelder now employs more than 3,300 professionals and operates from over 110 office locations in the United States, Canada, and Australia.
History
Since its establishment in 1961, Veenstra & Kimm has remained committed to providing forward‑thinking civil and environmental engineering services. With decades of experience, the firm delivers high‑quality, customized solutions that support both infrastructure development and responsible environmental practices.
Calhoun-Burns & Associates began operations in 1982, offering bridge inspection and design services to counties and municipalities throughout Iowa, as well as the Iowa Department of Transportation. Over the years, it has built strong, enduring relationships with agencies at both the local and state levels.
In the early 2000s, the two firms came together, uniting complementary strengths and shared values under a common commitment to public service. Today, Veenstra & Kimm, A Kleinfelder Company, continues to build on this combined legacy by offering meaningful work, professional growth, and long-term career opportunities for the people who help shape the infrastructure of our communities.
Our Culture
We are a responsive team of engineers, scientists, and construction professionals providing solutions that improve our clients’ transportation, water, energy, and other private infrastructure. Our ecosystem mindset facilitates collaboration, harnessing the collective ingenuity of Kleinfelder and our partners, to deliver the right solutions to our clients, every day, on every project. Our employees are the backbone of an integrated company that provides innovative, dependable, and sustainable solutions for our clients. At Kleinfelder, we provide opportunities for each person to use their expertise and talents, grow professionally, and make an impact each and every day. We know our employees’ commitment, pride, and passion contributes to the success of the company and to the successes of our clients. Hard work should reap rewards and build for the future—yours and ours.
