Sterling Construction Company, Inc. is the Selected Contractor for a California Department of Transportation CMGC Project

Sterling Construction Company, Inc. (NasdaqGS:STRL) (“Sterling” or “the Company”) today announced that a joint venture, comprised of its Myers & Sons Construction (“Myers”) and Ralph L. Wadsworth Construction Company, LLC (“RLW”) subsidiaries, was selected by the California Department of Transportation (“CalTrans”) as the contractor on a Construction Management/General Contractor (CMGC) project with a potential value of approximately $52 million. The project will entail construction work on State Route 140 in Mariposa County to restore two-lane access that was blocked by a rock slide (the Ferguson Slide) in May 2006. The Myers/RLW Joint Venture will work with CalTrans’ GMGC design team to develop a best-value design and environmental document. Once design is complete and the Environmental Assessment has been approved, a contract will be negotiated for the construction of the project. Construction is anticipated to start in 2016 and be completed in 2018.

Peter MacKenna, Sterling’s Chief Executive Officer, commented, “Mariposa 140 is an important all-weather transportation link for Yosemite National Park and we are proud to be involved in restoring a permanent highway to this route. Additionally, this award provides us with further validation that the collaborative strategy being deployed by our subsidiaries is a successful formula when competing for attractive, high-profile projects such as this.”

Sterling is a leading heavy civil construction company that specializes in the building and reconstruction of transportation and water infrastructure projects in Texas, Utah, Nevada, Arizona, California, Hawaii, and other states where there are construction opportunities. Its transportation infrastructure projects include highways, roads, bridges and light rail and its water infrastructure projects include water, wastewater and storm drainage systems.

This press release includes certain statements that fall within the definition of “forward-looking statements” under the Private Securities Litigation Reform Act of 1995. Any such statements are subject to risks and uncertainties, including overall economic and market conditions, federal, state and local government funding, competitors’ and customers’ actions, and weather conditions, which could cause actual results to differ materially from those anticipated, including those risks identified in the Company’s filings with the Securities and Exchange Commission. Accordingly, such statements should be considered in light of these risks. Any prediction by the Company is only a statement of management’s belief at the time the prediction is made. There can be no assurance that any prediction once made will continue thereafter to reflect management’s belief, and the Company does not undertake to update publicly its predictions or to make voluntary additional disclosures of nonpublic information, whether as a result of new information, future events or otherwise.