Colo Railroad Builders appointed Mark Jansen to vice president and general manager of its Chicago office.

Frank Condurelis, managing director of L.A. Colo, LLC, said, "Mark joins the company with over 30 years of railroad construction and operational management experience. Beginning his career at the Norfolk Southern Railroad, Mark has a wealth of experience with Class 1 railroads, Fortune 500 industrial maintenance, bridge construction and managing the construction process."