Sterling Infrastructure Investor Presentation — September 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.D.A. Davidson 21stAnnual

Diversified Industrials & Services

2 Sidoti August Micro -Cap Virtual ConferenceDISCLOSURE: Forward -Looking Statements

This presentation contains, and theofficers and directors oftheCompany may from time totime make, statements that areconsidered forward -

looking statements within themeaning oftheSecurities Actof1933 and theSecurities Exchange Actof1934 .These forward -looking statements

aresubject toanumber ofrisks and uncertainties, many ofwhich arebeyond our control, which may include statements about :our business

strategy ;ourfinancial strategy ;ourindustry outlook ;and ourexpected margin growth ;and ourplans, objectives, expectations, forecasts, outlook

and intentions .Allofthese types ofstatements, other than statements ofhistorical fact included inthis presentation, are forward -looking

statements .Insome cases, forward -looking statements can beidentified byterminology such as“may,” “will,” “could,” “should,” “expect,” “plan,”

“project,” “intend,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “pursue,” “target,” “continue,” the negative ofsuch terms orother

comparable terminology .The forward -looking statements contained inthis presentation arelargely based onour expectations, which reflect

estimates and assumptions made byour management .These estimates and assumptions reflect our best judgment based oncurrently known

market conditions and other factors .Although webelieve such estimates and assumptions tobereasonable, they areinherently uncertain and

involve anumber ofrisks and uncertainties that arebeyond ourcontrol .Inaddition, management’s assumptions about future events may prove

tobeinaccurate .Management cautions allreaders that theforward -looking statements contained inthis presentation arenot guarantees of

future performance, and wecannot assure any reader that such statements willberealized ortheforward -looking events and circumstances will

occur .Actual results may differ materially from those anticipated orimplied intheforward -looking statements due tofactors listed inthe“Risk

Factors” section inourfilings with theU.S.Securities and Exchange Commission and elsewhere inthose filings .Additional factors orrisks that we

currently deem immaterial, that arenotpresently known tousorthat arise inthefuture could also cause ouractual results todiffer materially from

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

statements arebased arelikely tochange after thedate theforward -looking statements aremade .The forward -looking statements speak only as