Sterling Infrastructure Investor Presentation — August 2022

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We build and service the infrastructure that enables our economy to

run, our people to move, and our country to grow.Jefferies Industrials Conference

2 Sterling: Second Quarter 2022DISCLOSURE: Forward-Looking Statements

This presentation contains, and the officers and directors of the Company may from time to time make, statements that are considered forward-

looking statements within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934. These forward-looking statements

are subject to a number of risks and uncertainties, many of which are beyond our control, which may include statements about: our business

strategy; our financial strategy; our industry outlook; and our expected margin growth; and our plans, objectives, expectations, forecasts, outlook

and intentions. All of these types of statements, other than statements of historical fact included in this presentation, are forward-looking

statements. In some cases, forward-looking statements can be identified by terminology such as “may,” “will,” “could,” “should,” “expect,” “plan,”

“project,” “intend,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “pursue,” “target,” “continue,” the negative of such terms or other

comparable terminology. The forward-looking statements contained in this presentation are largely based on our expectations, which reflect

estimates and assumptions made by our management. These estimates and assumptions reflect our best judgment based on currently known

market conditions and other factors. Although we believe such estimates and assumptions to be reasonable, they are inherently uncertain and

involve a number of risks and uncertainties that are beyond our control. In addition, management’s assumptions about future events may prove

to be inaccurate. Management cautions all readers that the forward-looking statements contained in this presentation are not guarantees of

future performance, and we cannot assure any reader that such statements will be realized or the forward-looking events and circumstances will

occur. Actual results may differ materially from those anticipated or implied in the forward-looking statements due to factors listed in the “Risk

Factors” section in our filings with the U.S. Securities and Exchange Commission and elsewhere in those filings. Additional factors or risks that we

currently deem immaterial, that are not presently known to us or that arise in the future could also cause our actual results to differ materially

from our expected results. Given these uncertainties, investors are cautioned that many of the assumptions upon which our forward-looking