Littlejohn & Co. LLC, a private investment firm based in Greenwich, Conn., has bought Ardurra Group Inc., a provider of engineering and design services to water, transportation and aviation end markets.

Headquartered in Miami, Fla., Ardurra offers its engineering and design services across the southeast, central, southwest and northwest U.S. The company’s technical services are provided to municipalities, state government entities, utilities and businesses. Ardurra’s management team and employees will continue to own a significant portion of the business.

“We believe Ardurra is well positioned as investments in complex infrastructure – particularly focused around drinking water, water treatment and transportation – continue to accelerate,” says Michael Kaplan, a managing director at Littlejohn. “Ardurra has proven its ability to attract and retain the best talent in the industry, and we are thrilled to partner with this seasoned, entrepreneurial team to grow the business through geographic expansion, new capability development and strategic M&A.”

Harris Williams and Environmental Financial Consulting Group acted as Littlejohn’s financial advisors. Troutman Pepper Hamilton Sanders LLP served as legal counsel to Littlejohn.