About KLJ

To say a company has evolved implies that it has adapted, transformed, become more efficient, and quick to identify next steps. That’s what’s happening at KLJ. With 80 years serving in the engineering industry, we look back – from a small company working across the Dakotas, to engineering infrastructure across the nation.

Our evolution has helped us solidify our mission to improve the lives of people and communities – by engineering progressive infrastructure. We are perfectly designed to thrive in this environment. Adaptable enough to evolve with the times.

Engineering smart for a solid future. It’s second nature at KLJ.


Sunday: Closed
Monday: 8:00 am - 5:00 pm
Tuesday: 8:00 am - 5:00 pm
Wednesday: 8:00 am - 5:00 pm
Thursday: 8:00 am - 5:00 pm
Friday: 8:00 am - 5:00 pm
Saturday: Closed