Sterling Construction Co. Inc. reported that, as previously anticipated, Joseph P. Harper, Sr., 67, has retired as President, Chief Operating Officer and Treasurer of the company. Concurrent with Mr. Harper's retirement, the Board of Directors has elected Sterling's Chief Executive Officer, Peter E. MacKenna, to succeed Mr. Harper in the additional role of President.

Sterling's Executive Vice President and Chief Financial Officer, Elizabeth D. Brumley, will now also serve as Treasurer. Mr. Harper will continue to serve on Sterling's Board of Directors. The Company is not filling the position of chief operating officer; those responsibilities will be assumed by Mr. MacKenna.

Separately, the Company announced that it has promoted Craig Allen, Human Resources Director to Senior Vice President and Chief Human Resources Officer.