Investor Presentation

Key States Stepping Up To The Plate Seeing Increased State/Local Funding In Our Footprint On Average, Federal Funding Supports 56% of Public Spending In Our Top 10 States (1) ...Yet, State/Local Funding Remains Critical To Driving Growth In Public Spending ■ ■ ■ ■ Less Reliant (1) (2) 34% Texas 42% Kentucky 43% Utah % STATE DOT BUDGET DERIVED FROM FEDERAL FUNDING POSITIVE PUBLIC OUTLOOK 49% Texas - 21% of Revenue (Prop 7 + $1.3 billion of new measures approved on Nov. 7, 2017) Missouri - 9% of Revenue (House Resolution 47 - Study to increase funding by $435 mm/yr) Colorado -6% of Revenue (Senate Bill 267 - $1.8 billion bond for road work in rural settings) lowa - 4% of Revenue (2015 gas tax increase resulted in an incremental $515 mm in funding) Minnesota - 3% of Revenue (Stable growth market w/ multi-year funding) Kansas 56% lowa 2018 Public Transportation Infrastructure Funding Outlook By SUM's Top 10 States (2) Top 10 States Represent More Than 80% of Gross Revenue H 57% Oklahoma Minnesota Missouri Utah - 13% of Revenue Virginia - 6% of Revenue Kentucky - 6% of Revenue H Oklahoma - 3% of Revenue 65% ARTBA 2018 Transportation Construction Market Forecast; Top 10 states as measured by gross revenue in FY17 Market point of view supported by state DOT STIP forecasts, Annual State Budgets and Company Estimates 71% 6 71% More Reliant Virginia STABLE PUBLIC OUTLOOK (-) NEGATIVE PUBLIC OUTLOOK 74% Colorado Kansas - 12% of Revenue - May upgrade to positive outlook pending increased state funding SUMMIT Materials

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