Sterling Infrastructure Investor Presentation — May 2024

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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.Q1 2024 Earnings Call

May 7, 20242 Sterling | STRL: First Quarter 2024DISCLOSURE: 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; our guidance; 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,” "guidance," “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