march2025investorpresent

MOVING INFRASTRUCTURE FORWARD | MARCH 2025 INVESTOR PRESENTATION Exhibit 99.1

2 I MOVING INFRASTRUCTURE FORWARD I 2025 FORWARD LOOKING STATEMENTS Some statements in this release, which are not historical facts, are “forward‐looking statements” as defined by the Private Securities Litigation Reform Act of 1995. Forward‐ looking statements include statements about Arcosa’s estimates, expectations, beliefs, intentions or strategies for the future. Arcosa uses the words “anticipates,” “assumes,” “believes,” “estimates,” “expects,” “intends,” “forecasts,” “may,” “will,” “should,” “guidance,” “outlook,” “strategy,” “plans,” “goal,” and similar expressions to identify these forward‐looking statements. Forward‐looking statements speak only as of the date of this release, and Arcosa expressly disclaims any obligation or undertaking to disseminate any updates or revisions to any forward‐looking statement contained herein, except as required by federal securities laws. Forward‐looking statements are based on management’s current views and assumptions and involve risks and uncertainties that could cause actual results to differ materially from historical experience or our present expectations, including but not limited to assumptions, risks and uncertainties regarding the failure to successfully complete or integrate acquisitions, including Ameron and Stavola, or divest any business, or failure to achieve the expected benefits of acquisitions or divestitures; market conditions and customer demand for Arcosa’s business products and services; the impact of Arcosa's level of indebtedness; the cyclical nature of, and seasonal or weather impact on, the industries in which Arcosa competes; competition and other competitive factors; governmental and regulatory factors; changing technologies; availability of growth opportunities; market recovery; ability to improve margins; the impact of inflation and costs of materials; assumptions regarding achievements of the expected benefits from the Inflation Reduction Act; the delivery or satisfaction of any backlog or firm orders; the impact of pandemics on Arcosa’s business; the impact of tariffs; and Arcosa’s ability to execute its long‐term strategy, and such forward‐looking statements are not guarantees of future performance. For further discussion of such risks and uncertainties, see “Risk Factors” and the “Forward‐Looking Statements” section of “Management's Discussion and Analysis of Financial Condition and Results of Operations” in Arcosa's Form 10‐K for the year ended December 31, 2024 and as may be revised and updated by Arcosa's Quarterly Reports on Form 10‐Q and Current Reports on Form 8‐K. NON‐GAAP FINANCIAL MEASURES This presentation contains financial measures that have not been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). Reconciliations of non‐ GAAP financial measures to the closest GAAP measure are provided in the Appendix.

HOW TO FIND US OUR WEBSITE www.arcosa.com NYSE TICKER ACA HEADQUARTERS Arcosa, Inc. 500 North Akard Street, Suite 400 Dallas, TX 75201 INVESTOR CONTACT [email protected] 3 I MOVING INFRASTRUCTURE FORWARD I 2025

01 03 04 OVERVIEW FINANCIAL HIGHLIGHTS 02 OUTLOOK TABLE OF CONTENTS 4 I MOVING INFRASTRUCTURE FORWARD I 2025 STRATEGIC TRANSFORMATION

OVERVIEW 01

ARCOSA’S VALUE PROPOSITION FOCUSED on margin expansion and cash flow generation EXPERIENCED management team with history of managing through economic cycles LEADING businesses serving critical infrastructure markets TRACK RECORD of executing on strategic priorities DISCIPLINED CAPITAL allocation process to grow in attractive markets and improve returns on capital 6 I MOVING INFRASTRUCTURE FORWARD I 2025

ARCOSA AT A GLANCE As of and for the year ended 12/31/2024. See Adjusted Net Income and Adjusted EBITDA reconciliations in Appendix Arcosa completed the divestiture of its Steel Components business on August 16, 2024. Financial results for the business are included in continuing operations to date of sale. Adjusted Net Income Adjusted EBITDA Infrastructure‐related Segments Employees Years of Operating History OUR THREE BUSINESS SEGMENTS Revenues$2.6B $148M $447M ~6,250 85+ 3 7 I MOVING INFRASTRUCTURE FORWARD I 2025

BUSINESS OVERVIEW ENGINEERED STRUCTURES TRANSPORTATION PRODUCTS(1)CONSTRUCTION PRODUCTS (1) Arcosa completed the divestiture of its Steel Components business on August 16, 2024. Financial results for the business are included in continuing operations to date of sale. Revenues and Adjusted Segment EBITDA and margin for the year ended 12/31/2024. See Adjusted Segment EBITDA reconciliation in Appendix. NATURAL & RECYCLED AGGREGATES SPECIALTY MATERIALS CONSTRUCTION SITE SUPPORT WIND TOWERS UTILITY STRUCTURES BARGES STEEL COMPONENTS(1) Arcosa’s three segments are made up of leading businesses that serve critical infrastructure markets REVENUES ADJ. SEGMENT EBITDA & MARGIN $1,105M $1,047M $418M $282M 26% $159M 15% $64M 15% REVENUES ADJ. SEGMENT EBITDA & MARGIN REVENUES ADJ. SEGMENT EBITDA & MARGIN MARINE COMPONENTS 8 I MOVING INFRASTRUCTURE FORWARD I 2025 TRAFFIC & TELECOM & LIGHTING STRUCTURES

STRATEGIC TRANSFORMATION 02

10 I MOVING INFRASTRUCTURE FORWARD I 2025 ARCOSA’S LONG‐TERM VISION Reduce the complexity and cyclicality of the overall business Integrate Environmental, Social, and Governance (ESG) initiatives into our long‐term strategy Improve long‐term returns on invested capital Grow in attractive markets where we can achieve sustainable competitive advantages Maintain a healthy balance sheet through prudent deleveraging

Construction Products 33% Engineered Structures 38% Transportation Products 29% We have made significant progress advancing our long‐term vision 11 I MOVING INFRASTRUCTURE FORWARD I 2025 (1)Pro Forma as of 12/31/2024 for the acquisitions of Stavola and Ameron and the divestiture of Steel Components as if the transactions had occurred on 1/1/2024. See Adjusted Segment EBITDA reconciliations in the Appendix Aggregates4 ~67% % Adjusted EBITDA, excluding corporate costs 2024 PF(1)2018 Construction Products 62% Engineered Structures 28% Transportation. Products 10% Acquisitions Construction Products Engineered Structures Divestitures STEEL COMPONENTSTANK $219M $573M STRATEGIC TRANSFORMATION

~$2.7 billion of investment in Construction Products acquisitions as we seek to expand our growth platforms 12 I MOVING INFRASTRUCTURE FORWARD I 2025 ONGOING INVESTMENT IN OUR CONSTRUCTION PRODUCTS PLATFORM Q4 2024Q2 2022Q3 2021Q2 2021Q3 2020Q1 2020Q4 2018KEY ACQUISITIONS Natural Aggregates Recycled Aggregates FOB Asphalt Recycled AggregatesNatural AggregatesNatural AggregatesRecycled Aggregates Natural Aggregates Recycled Aggregates Natural Aggregates Specialty Materials Natural AggregatesPRODUCT LINE  Expand exposure to northeast region  Adding scaled and vertically aggregates and asphalt operations  Entry into Southern California market  Scaled entry into Phoenix  Entry into attractive new geographies (TN, KY, and PA)  Expanded presence in TX and along the Gulf  Expanded presence in DFW  Increased exposure to recycled aggregates  Expanded presence in Houston  Entry into recycled aggregates  Added complementary scaled platform  Diversified customer based and end‐markets STRATEGIC FIT 5 active mines 3 recycled aggregates facilities 12 asphalt plants 4 crushing locations6 active mines14 active mines 5 crushing locations 1 active mines 12 locations24 active mines 5 production facilitesLOCATION COUNT $1,200M$75M$150M$375M$87M$298M$315MPURCHASE PRICE 10.7X(1)7.8X10.7X12.9X(1)8.5X8.1X9.8XPURCHASE MULTIPLE Attractive fundamentals of Aggregates and Specialty Materials ● Attractive markets with long‐term pricing and volume growth; less cyclical than other Arcosa businesses ● Sustainable competitive advantages, through reserve positions, permits, product portfolio, proprietary processing capabilities, and deep market knowledge ● Fragmented industry structure with ability to buy small to medium size assets at attractive multiples ● Ability to use acquisitions as growth platforms for future organic and bolt‐on opportunities (1) Multiple shown net of estimated tax benefits

Enhances Arcosa’s overall profitability and financial profile Extends footprint into the nation’s largest MSA with a scaled and vertically integrated aggregates and FOB asphalt operation 2024 ‐ COMPLETED THE ACQUISITION OF STAVOLA (OCTOBER 1) AND SALE OF STEEL COMPONENTS (AUGUST 16) 13 I MOVING INFRASTRUCTURE FORWARD I 2025 1 Represents attractive valuation for a scaled aggregates‐led business with premium financial attributes2 Increases Arcosa’s exposure to higher margin Construction Products Adjusted EBITDA3 Reduces the complexity and cyclicality of the portfolio 4 5 STEEL COMPONENTS Portfolio resilience supports our ability to maintain a healthy balance sheet through prudent deleveraging6

$1.2B ACQUISTION OF STAVOLA, A LEADING PROVIDER OF CONSTRUCTION MATERIALS OPERATING IN THE NORTHEAST BY THE NUMBERS COMPANY HIGHLIGHTS Operates third largest quarry in production in the region, allowing it to serve both external customers and internal asphalt demand Founded in 1948 with over 75 years of industry experience Footprint well located to service ~85% of NJ’s population with opportunities to grow across the broader MSA Strong positions in its core NJ – NY area market, the largest MSA in the U.S. Aggregates Asphalt Other ADJUSTED EBITDA 14 I MOVING INFRASTRUCTURE FORWARD I 2025 Business Breakdown 31% 59% 10% $283M ~$100M LTM Adj. EBITDA ~35% Adj. EBITDA Margin ~5.7M Tons of Annual Aggregates Sales ~2.6M Tons of Annual Asphalt Sales 5 Hard Rock Quarries 12 Asphalt Plants 3 Recycled Aggregates Facilities ~350M Tons of Estimated Aggregates Reserves Note: Amounts for Stavola are LTM 6/30/24; Other revenue generated primarily from mill and fill paving operation and other services, including earthwork, excavating and utility installation 56% 44% $100M REVENUE

15 I MOVING INFRASTRUCTURE FORWARD I 2025 STAVOLA EXPANDS AND DIVERSIFIES CONSTRUCTION PRODUCTS’ GEOGRAPHIC FOOTPRINT Our Aggregates Business Now Serves 13 of the 50 Largest MSAs Natural Aggregates Recycled Aggregates Asphalt Stavola Locations Incremental Presence from Stavola Construction Products Segment Existing Natural & Recycled Aggregates presence * * * * * Multiple locations

STAVOLA EXTENDS ARCOSA’S FOOTPRINT INTO THE NATION’S LARGEST MSA 16 I MOVING INFRASTRUCTURE FORWARD I 2025 Infrastructure 75–85% Residential 10–20% Non‐residential 5–15% Aggregates Demand Asphalt Demand Infrastructure 80–90% Residential 5–10% Non‐residential 5–10% Stavola’s Core Markets Are Over‐Indexed to Infrastructure Demand 29M Tons ~80 – 90% of asphalt demand in Stavola’s core market is from maintenance projects, providing stability and low volatility 9M Tons Source: Third party research, USGS

Construction Products Pro Forma2 Construction Products1 LTM REVENUE LTM ADJUSTED EBITDA LTM ADJ. EBITDA MARGIN EXPANDS CONSTRUCTION PRODUCTS WITH HIGH VALUE‐ADDED AGGREGATES AND A VERTICALLY INTEGRATED AND COMPLEMENTARY ASPHALT OPERATION Acquisition of Stavola enhances scale and margin profile of our Construction Products portfolio 17 I MOVING INFRASTRUCTURE FORWARD I 2025 Aggregates4 ~56% Asphalt ~14% Other2 ~12% % Revenue Pro Forma3 Portfolio Mix See Adjusted Segment EBITDA and Stavola Adjusted EBITDA reconciliation tables in the Appendix 1Reflects FY 2024 results for Arcosa, excluding the fourth quarter impact of Stavola (closed on October 1) 2Includes LTM 6/30/24 results for Stavola 3 Includes Arcosa’s Construction Site Support business and Stavola’s Contracting business 57% 19% 14% 10 Other2 Asphalt Specialty Materials Aggregates 100% Aggregates & Aggregates‐Based 76% $M’s $M’s 1,027 1,310 255 355 24.8% 27.1% +$283 +$100 +230bps

APRIL 2024 – COMPLETED ACQUISITION OF AMERON POLE PRODUCTS FOR $180 MILLION • Provides entry into the complementary steel and concrete lighting pole market • Expands product offerings in traffic and telecom structures businesses • Margin accretive to both Engineered Structures segment and Arcosa overall • Similar to our utility structures business, long‐term growth driven by increased infrastructure spending, replacement demand, energy transition, and population growth • Provides geographic presence on the west coast • Transaction accelerates our growth at an attractive 9X multiple 18 I MOVING INFRASTRUCTURE FORWARD I 2025 Advances our strategy to effectively deploy capital into Arcosa’s growth businesses by expanding our product offerings in Engineered Structures Ameron Revenue and Adjusted EBITDA for the Year Ended 12/31/2023; see Ameron Adjusted EBITDA reconciliation in Appendix. BUSINESS PROFILE Ameron is a leading supplier of highly engineered, premium concrete and steel poles for a broad range of infrastructure applications ~250 EMPLOYEES STRATEGIC RATIONALE 4 MANUFACTURING SITES ~$20M ADJUSTED EBITDA Lighting Poles Traffic Signals Telecom Poles Utility Distribution Other REVENUE BY PRODUCT LINE ~$94M REVENUE

OTHER STRATEGIC PORTFOLIO ACTIONS IN 2024 19 I MOVING INFRASTRUCTURE FORWARD I 2025  Completed the sale of our Steel Components business to Stellex Capital Management on August 16  Steel Components operates under the brands McConway & Torley, Standard Forged Products, and McKees Rocks Forgings  Reported within our Transportation Products segment, margin for this business was dilutive to the segment and Arcosa overall  We also completed the sale of other non‐core assets to improve margin ‐ Sold a non‐operating facility within Engineered Structures ‐ Divested a single‐location subscale asphalt and paving business that was operating at a modest loss ‐ Exited a small underperforming natural aggregates operation in west Texas serving the Permian Basin and redeployed the equipment  Cash proceeds from these divestitures were used for debt reduction

OUTLOOK 03

We expect double‐digit revenue and Adjusted EBITDA growth in 2025, split ~ 60/40 between inorganic and organic contributions See Adjusted EBITDA reconciliation in Appendix. 2025 GUIDANCE 439 8 FY‐24 2025 Guidance 447 545 ‐ 595 +30% +28% Adjusted EBITDA ($M) 21 I MOVING INFRASTRUCTURE FORWARD I 2025 Margin, excl. Steel Components 17.7% 2,482 88 FY‐24 2025 Guidance 2,570 2,800 – 3,000 +17% +13% Revenues ($M) Steel Components 19.7% Steel Components

MARKET OUTLOOK CONSTRUCTION PRODUCTS ENGINEERED STRUCTURES TRANSPORTATION PRODUCTS 22 I MOVING INFRASTRUCTURE FORWARD I 2025 • Infrastructure spending up due to expected increase in federal funding from IIJA and healthy state DOT budgets • $350B of IIJA funds for highways and bridges through 2026 –~20% has been spent(1) • Potential recovery in single family construction in second half of 2025 • Strong pricing gains in 2024 support continued price momentum for 2025 • Stavola will contribute to revenue growth and margin expansion • Strong backlog visibility for utility and traffic structures, driven by grid‐ hardening and road infrastructure investments • Future demand catalysts from the electrification of vehicles and connecting renewable energy to the grid • Wireless 5G telecom expected to drive solid long‐term demand for telecom • Demand for street lighting driven by the need to replace existing infrastructure, LED upgrades, and new residential construction • Solid wind towers backlog for 2025 with potential for new orders for 2026 delivery and beyond • Aging fleet and underinvestment in replacement support positive outlook for new barge construction • ~40% of the hopper fleet and ~30% of tank fleet are more than 20 years old(2) • Good backlog visibility as tank barge capacity is fully booked and hopper barge orders extend in 3Q25 (1) Wallstreet research; (2) The Waterways Journal: Mississippi River System Barge Fleet Survey 2022

CONSTRUCTION PRODUCTS MARKET OUTLOOK 23 I MOVING INFRASTRUCTURE FORWARD I 2025 Source: USGS – National Minerals Information Center Aggregates industry has positive fundamentals and beneficial pricing dynamics Texas is an important market for aggregatesAggregates pricing is consistently positive ■ Industry reported significant pricing strength over last few years despite declines in volume ■ Arcosa aggregates experienced low double‐digit pricing growth in 2024 ■ We expect mid‐single‐digit pricing growth in 2025 Top 15 States by Aggregate Volume ■ Texas consumed over 10% of total industry aggregates volume since 2008 ■ Construction spending outlook for Texas is favorable with 2024 fiscal year planned DOT lettings of $13B. Ten‐Year outlook increase to $100B in 2023, up $15B ■ Volumes from the top 15 states have been around 60% of total volume for the last 20 years ■ Arcosa is currently exposed to 9 of the top 15 states 0.0 2.5 5.0 7.5 10.0 12.5 15.0 0 500 1,000 1,500 2,000 2,500 3,000 3,500 1971 1975 1979 1983 1987 1991 1995 1999 2003 2007 2011 2015 2019 2023 Aggregate Volume Price Per Ton ($/ton) 0% 10% 20% 30% 40% 50% 60% 70% 80% 2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 Texas California Missouri Florida Ohio Pennsylvania Michigan Alabama Indiana Virginia North Carolina Georgia New York Illinois Arizona M of tons $ per ton Denotes Arcosa presence Denotes Stavola presence % of share

ENGINEERED STRUCTURES MARKET OUTLOOK 24 I MOVING INFRASTRUCTURE FORWARD I 2025 (1) The C Three Group (August 2024); (2) Wood Mackenzie, Q4 2024 Market Outlook The utility transmission and wind tower business outlook remains positive with robust investment in electrical transmission infrastructure expected over the medium term and an anticipated multi‐year wind power upcycle Long‐Term Recovery in Wind Industry Expected in 2025 and Beyond Total U.S. and Canada Electric Transmission: Reported CAPEX ($B) North American Electric Transmission Capital Spend(1) Total U.S. and Canada Electric Transmission: Reported CAPEX ($B) 0 20 40 60 80 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 Actual Forecast 0 3 6 9 12 15 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 U.S. Onshore Wind Installations (2021‐2033) (GW)(2) Actual Forecast

Total U.S. and Canada Electric Transmission: Reported CAPEX ($B) TRANSPORTATION PRODUCTS MARKET OUTLOOK 25 I MOVING INFRASTRUCTURE FORWARD I 2025 (1) The Waterways Journal: Mississippi River System Barge Fleet Survey, 2024 Positive outlook as fleet replacement needs sustain market recovery for barge business Roughly 40% of the hopper fleet and 30% of the tank fleet is more than 20 years old Total U.S. and Canada Electric Transmission: Reported CAPEX ($B) Fleet age is increasing due to underinvestment since 2016 17.1 17.8 2022 2023 +4% Average Age of Hopper Fleet(1) (in Years) 15.4 17.7 2022 2023 +15% Average Age of Tank Fleet (1) (in Years) 0% 5% 10% 15% 20% 25% 30% 0‐5 6‐10 11‐15 16‐20 21‐25 >25 Hopper Tank Fleet Age Distribution Based on Year Built (1) (%) Age in Years

FINANCIAL HIGHLIGHTS 04

STRONG TRACK RECORD OF GROWTH AND MARGIN EXPANSION WHILE TRANSFORMING PORTFOLIO (1)Margin excludes the gain on land sale in 2023. See Adjusted EBITDA and Adjusted Segment EBITDA reconciliations in Appendix. 27 I MOVING INFRASTRUCTURE FORWARD I 2025 73 92 138 180 199 223 282 82 129 116 125 149 159 64 64 78 24 27 116 64 ‐32 ‐44 ‐48 ‐46 ‐50 62 ‐58‐55 FY 2018 2019 2020 2021 2022 2023 2024 187 241 284 283 325 368 447 22 16% ADJUSTED EBITDA ($M) Transportation Products Engineered Structures Gain on land sale Construction Products Corporate Margin 12.8% 17.4%13.9% 14.7% 13.9% 14.5% 15.1%(1)

FY 2024 CONSOLIDATED RESULTS See Adjusted Net Income and Adjusted EBITDA reconciliations in Appendix. Steel Components business was divested on August 16, 2024 and included in continuing operations until the date of sale. REVENUES ($M) ADJUSTED EBITDA ($M) 2,154.6 2,482.1 153.3 FY‐23 87.8 FY‐24 2,307.9 2,569.9 +15% +11% Double‐digit revenue and Adjusted EBITDA growth results in margin expansion of 260 basis points, balanced between organic and inorganic contributions 28 I MOVING INFRASTRUCTURE FORWARD I 2025 325.1 439.0 21.8 20.7 FY‐23 8.0 FY‐24 367.6 447.0 +35% +22% Margin, excl. Steel Comp. & Gain on Land Sale 15.1% 17.7% Gain on Land Sale Steel ComponentsSteel Components REPORTED ADJUSTED NET INCOME ($M) 159.2 93.7 FY‐23 FY‐24 N.M. 158.1 147.9 FY‐23 FY‐24 ‐6%

Q4 2024 CONSOLIDATED RESULTS See Adjusted Net Income and Adjusted EBITDA reconciliations in Appendix. Steel Components business was divested on August 16, 2024 and included in continuing operations until the date of sale. (1)The reduction in Adjusted Net Income in the fourth quarter was driven by higher depreciation, depletion, and amortization expense due to purchase accounting adjustments for recent acquisitions and a higher tax rate due to year‐end true ups. REVENUES ($M) ADJUSTED EBITDA ($M) 29 I MOVING INFRASTRUCTURE FORWARD I 2025 Margin, excl. Steel Comp. 14.5% 19.3% REPORTED ADJUSTED(1) NET INCOME ($M) 27.1 (7.7) Q4‐23 Q4‐24 N.M. 33.2 22.6 Q4‐23 Q4‐24 ‐32% 546.5 666.2 35.7 Q4‐23 Q4‐24 582.2 +22% +14% Steel Components 79.0 128.3 5.3 Q4‐23 Q4‐24 84.3 +62% +52% Steel Components Robust Adjusted EBITDA growth outpaced revenue growth resulting in significant margin expansion, helped in part by the accretive impact of the Stavola acquisition that closed on October 1, 2024

30 I MOVING INFRASTRUCTURE FORWARD I 2025 $M’s Ratio at year end Spun debt free with $200M of cash Sale of Storage Tanks for $275M 6 construction bolt‐ ons totaling ~$120M, including expansion in Florida DISCIPLINED ‘CASH CULTURE’ AND TRACK RECORD OF DELEVERAGING FOLLOWING PAST ACQUISITIONS Free Cash Flow Net Debt to Adj. EBITDA See Free Cash Flow and Net Debt to Adjusted EBTIDA reconciliations in Appendix. 119 359 260 167 174 261 502 (77) (73) (106) (167) (171) (35) 2018 2019 2020 (65) 2021 2022 2023 2024 Avg. $164M 84 282 187 101 69 94 331 Operating Cash Flow Net Capital Expenditures 0.5 (0.6) 0.5 2.1 1.2 1.3 3.4 2.9 2.5 2018 2019 2020 2021 2022 2023 3Q24 Pro Forma 4Q24 1Q 2026 Goal Intend to return to long‐term target of 2‐2.5x within 18 months of Stavola acquisition

APPENDIX

GUIDANCE SUMMARY FOR 2025 ADJUSTED EBITDA COMMENTARY CAPITAL EXPENDITURES OTHER • $545M to $595M range for full year 2025 • 2024 full year Adjusted EBITDA was $439M, excluding $8M from the divested steel components business • Full year 2025 capex of $145M to $165M TAX RATE • Full year 2025 depreciation, depletion, and amortization expense of $230M to $235M • Full year 2025 corporate costs of ~60M • Full year 2025 effective tax rate of ~19‐20% REVENUE • $2.8B to $3.0B range for full year 2025 • 2024 full year revenue was $2.48B, excluding $88M from the divested steel components business 32 I MOVING INFRASTRUCTURE FORWARD I 2025

NON‐GAAP MEASURES Refer to slides that follow for accompanying reconciliations “EBITDA” is defined as net income plus interest, taxes, depreciation, depletion, and amortization. “Adjusted EBITDA” is defined as EBITDA adjusted for certain items that are not reflective of the normal earnings of our business. GAAP does not define EBITDA or Adjusted EBITDA and they should not be considered as alternatives to earnings measures defined by GAAP, including net income. We use Adjusted EBITDA to assess the operating performance of our consolidated business, as a metric for incentive‐based compensation, as a measure within our lending arrangements, and as a basis for strategic planning and forecasting as we believe that it closely correlates to long‐term shareholder value. As a widely used metric by analysts, investors, and competitors in our industry, we believe Adjusted EBITDA also assists investors in comparing a company's performance on a consistent basis without regard to depreciation, depletion, amortization, and other items which can vary significantly depending on many factors. “Adjusted EBITDAMargin” is defined as Adjusted EBITDA divided by Revenues. GAAP does not define “Adjusted Net Income” and it should not be considered as an alternative to earnings measures defined by GAAP, including net income. We use this metric to assess the operating performance of our consolidated business. We adjust net income for certain items that are not reflective of the normal operations of our business to provide investors with what we believe is a more consistent comparison of earnings performance from period to period. “Segment EBITDA” is defined as segment operating profit plus depreciation, depletion, and amortization. “Adjusted Segment EBITDA” is defined as Segment EBITDA adjusted for certain items that are not reflective of the normal earnings of our business. GAAP does not define Segment EBITDA or Adjusted Segment EBITDA and they should not be considered as alternatives to earnings measures defined by GAAP, including segment operating profit. We use Adjusted Segment EBITDA to assess the operating performance of our businesses, as a metric for incentive‐based compensation, and as a basis for strategic planning and forecasting as we believe that it closely correlates to long‐term shareholder value. As a widely used metric by analysts, investors, and competitors in our industry we believe Adjusted Segment EBITDA also assists investors in comparing a company's performance on a consistent basis without regard to depreciation, depletion, amortization, and other items, which can vary significantly depending on many factors. “Adjusted Segment EBITDAMargin” is defined as Adjusted Segment EBITDA divided by Revenues. “Freight‐Adjusted Revenues” for Construction Products is defined as segment revenues less freight and delivery, which are pass‐through activities. GAAP does not define Freight‐Adjusted Revenues and they should not be considered as alternatives to earnings measures defined by GAAP, including revenues. We use Freight‐Adjusted Revenues in the review of our operating results. We also believe that this presentation is consistent with our competitors. As a widely used metric by analysts and investors, this metric assists in comparing a company's performance on a consistent basis. “Freight‐Adjusted Segment EBITDAMargin” is defined as Freight‐Adjusted Revenues divided by Adjusted Segment EBITDA. GAAP does not define “Net Debt” and it should not be considered as an alternative to cash flow or liquidity measures defined by GAAP. The Company uses Net Debt, which it defines as total debt minus cash and cash equivalents to determine the extent to which the Company’s outstanding debt obligations would be satisfied by its cash and cash equivalents on hand. The Company also uses “Net Debt to Adjusted EBITDA”, which it defines as Net Debt divided by Adjusted EBITDA for the trailing twelve months as a metric of its current leverage position. We present this metric for the convenience of investors who use such metrics in their analysis and for shareholders who need to understand the metrics we use to assess performance and monitor our cash and liquidity positions. GAAP does not define “Free Cash Flow” and it should not be considered as an alternative to cash flow measures defined by GAAP, including cash flow from operating activities. We define Free Cash Flow as cash provided by operating activities less capital expenditures net of the proceeds from the disposition of property, plant, equipment, and other assets. We use this metric to assess the liquidity of our consolidated business. We present this metric for the convenience of investors who use such metrics in their analysis and for shareholders who need to understand the metrics we use to assess performance and monitor our cash and liquidity positions. 33 I MOVING INFRASTRUCTURE FORWARD I 2025

Reconciliation of Adjusted EBITDA and Adjusted Net Income 34 Moving Infrastructure Forward (1) Includes the impact of the fair value markup of acquired long‐lived assets, subject to final purchase price adjustments. (2) Expenses associated with acquisitions and divestitures, including the cost impact of the fair value markup of acquired inventory, advisory and professional fees, integration, separation, and other transaction costs. ($’s in millions) (unaudited) I MOVING INFRASTRUCTURE FORWARD I 2025 Full Year 2025 Guidance Year Ended December 31, Three Months Ended December 31, HighLow2023202420232024 $ 202.4$ 170.9$ 159.2$ 93.7$ 27.1$ (7.7)Net income (loss) Add: 107.0104.023.463.46.834.1Interest expense, net 50.640.136.736.39.418.1Provision for income taxes 235.0230.0159.5195.040.760.4Depreciation, depletion, and amortization expense(1) 595.0545.0378.8388.484.0104.9EBITDA Add (less): ——(6.4)2.1—(1.4)(Gain) loss on sale of businesses ——2.246.50.826.1Impact of acquisition and divestiture‐related expenses(2) ——(5.0)———Benefit from reduction in holdback obligation ———5.8——Impairment charge ——(2.0)4.2(0.5)(1.3)Other, net (income) expense $ 595.0$ 545.0$ 367.6$ 447.0$ 84.3$ 128.3Adjusted EBITDA 19.8 %19.5 %15.9 %17.4 %14.5 %19.3 %Adjusted EBITDA Margin Year Ended December 31, Three Months Ended December 31, 2023202420232024 $ 159.2$ 93.7$ 27.1$ (7.7)Net income (loss) 1.01.65.5(1.1)Gain on sale of businesses, net of tax 1.748.20.631.5Impact of acquisition and divestiture‐related expenses, net of tax(2) (3.8)———Benefit from reduction in holdback obligation, net of tax —4.4—(0.1)Impairment charge, net of tax $ 158.1$ 147.9$ 33.2$ 22.6Adjusted Net Income

35 Moving Infrastructure ForwardI MOVING INFRASTRUCTURE FORWARD I 2025 Reconciliation of Adjusted Segment EBITDA (1) Includes the impact of the fair value markup of acquired long‐lived assets, subject to final purchase price adjustments. (2) Expenses associated with acquisitions and divestitures, including the cost impact of the fair value markup of acquired inventory, advisory and professional fees, integration, separation, and other transaction costs. ($’s in millions) (unaudited) Twelve Months Ended December 31, 2018201920202021202220232024 Construction Products $ 50.4$ 52.7$ 74.7$ 83.2$ 96.5$ 138.6$ 133.9Operating Profit 21.938.060.188.7102.7111.7134.7Add: Depreciation, depletion, and amortization expense(1) 72.390.7134.8171.9199.2250.3268.6Segment EBITDA 0.81.42.97.6——12.2Add: Impact of acquisition and divestiture‐related expenses(2) ——0.8———5.8Add: Impairment charge ——————(5.0)Less: Gain on sale of businesses —————(5.0)—Less: Benefit from reduction in holdback obligation $ 73.1$ 92.1$ 138.5$ 179.5$ 199.2$ 245.3$ 281.6Adjusted Segment EBITDA 25.0 %20.9 %23.3 %22.5 %21.6 %24.5 %25.5 %Adjusted Segment EBITDA Margin Engineered Structures $ 28.6$ 100.7$ 80.2$ 88.0$ 307.0$ 95.7$ 126.4Operating Profit 29.727.931.533.130.526.645.4Add: Depreciation and amortization expense(1) 58.3128.6111.7121.1337.5122.3171.8Segment EBITDA ——2.81.00.6—1.6Add: Impact of acquisition and divestiture‐related expenses(2) 23.2—1.32.9———Add: Impairment charge ————(189.0)(6.4)(14.5)Less: Gain on sale of businesses $ 81.5$ 128.6$ 115.8$ 125.0$ 149.1$ 115.9$ 158.9Adjusted Segment EBITDA 10.4 %15.4 %13.2 %13.4 %14.9 %13.3 %15.2 %Adjusted Segment EBITDA Margin Transportation Products $ 48.4$ 46.8$ 54.6$ 6.4$ 11.5$ 45.8$ 30.2Operating Profit 15.516.318.017.815.816.012.6Add: Depreciation and amortization expense(1) 63.963.172.624.227.361.842.8Segment EBITDA —0.6—————Add: Impact of acquisition and divestiture‐related expenses(2) ——5.0————Add: Impairment charge ——————21.6Add: Loss on sale of business $ 63.9$ 63.7$ 77.6$ 24.2$ 27.3$ 61.8$ 64.4Adjusted Segment EBITDA 16.3 %13.7 %16.6 %7.9 %8.6 %14.3 %15.4 %Adjusted Segment EBITDA Margin $ (32.5)$ (47.3)$ (57.7)$ (70.3)$ (66.0)$ (62.8)$ (92.9)Operating Loss ‐ Corporate ——4.611.510.42.232.7Add: Impact of acquisition and divestiture‐related expenses ‐ Corporate(2) ———8.7———Add: Legal settlement 0.53.64.94.75.15.22.3Add: Corporate depreciation expense $ 186.5$ 240.7$ 283.7$ 283.3$ 325.1$ 367.6$ 447.0Adjusted EBITDA

36 Moving Infrastructure ForwardI MOVING INFRASTRUCTURE FORWARD I 2025 Reconciliation of Net Debt to Adjusted EBITDA and Free Cash Flow ($’s in millions) (unaudited) (1) These periods include pro forma adjustments for acquisitions completed during the period, as previously disclosed. (2) Adjusted EBITDA includes an upward pro forma adjustment for Ameron, acquired on April 9, 2024, of $5.0 million, which reflects an amount equal to 25% of Ameron’s historical Adjusted EBITDA for the twelve months ended December 31, 2023 of $19.8 million, as previously disclosed, to approximate the three‐month pro forma impact on our Adjusted EBITDA as if the acquisition had occurred on December 31, 2023. Adjusted EBITDA includes an upward pro forma adjustment for Stavola, acquired on October 1, 2024, of $71.2 million, which was Stavola's Adjusted EBITDA for the nine months ended September 31, 2024, to reflect the nine‐month pro forma impact on our Adjusted EBITDA as if the acquisition had occurred on December 31, 2023. Also included is a $8.0 million downward pro forma adjustment to exclude Adjusted EBITDA from the steel components business during the period, which was divested on August 16, 2024. As of December 31, 2024(2) September 30, 2024 Pro Forma(1) December 31, 2023 December 31, 2022(1) December 31, 2021(1) December 31, 2020(1) December 31, 2019 December 31, 2018 $ 1,707.1$ 1,848.7$ 573.1$ 555.9$ 685.7$ 254.5$ 107.3$ 185.5Total debt excluding debt issuance costs 187.3129.1104.8160.472.995.8240.499.4Cash and cash equivalents $ 1,519.8$ 1,719.6$ 468.3$ 395.5$ 612.8$ 158.7$ (133.1)$ 86.1Net Debt $ 515.2$ 500.1$ 367.6$ 329.1$ 298.4$ 291.4$ 240.7$ 186.5Adjusted EBITDA (trailing twelve months)(1) 2.93.41.31.22.10.5‐0.60.5Net Debt to Adjusted EBITDA Year Ended December 31, 2024202320222021202020192018 $ 502.0$ 261.0$ 174.3$ 166.5$ 259.9$ 358.8$ 118.5Cash Provided by Operating Activities (189.7)(203.5)(138.0)(85.1)(82.1)(85.4)(44.8)Capital expenditures 18.336.632.220.09.68.910.2Proceeds from the disposition of property, plant, equipment, and other assets (171.4)(166.9)(105.8)(65.1)(72.5)(76.5)(34.6)Net Capital Expenditures $ 330.6$ 94.1$ 68.5$ 101.4$ 187.4$ 282.3$ 83.9Free Cash Flow

37 Moving Infrastructure ForwardI MOVING INFRASTRUCTURE FORWARD I 2025 Reconciliation of Stavola, Ameron, and Steel Components Adjusted EBITDA (in millions) (unaudited) Twelve Months Ended June 30, 2024 $ 71.8Net Income Add: 0.8Interest expense, net —Provision for income taxes 18.9Depreciation, depletion, and amortization expense 91.5EBITDA 9.0 Non‐recurring adjustments $ 100.5Stavola Adjusted EBITDA Year Ended December 31, 2023 $ 14.9Net Income Add: —Interest expense, net —Provision for income taxes(1) 4.9Depreciation, depletion, and amortization expense 19.8EBITDA Add: (0.4)Inventory revaluation 0.4Other non‐recurring $ 19.8Ameron Adjusted EBITDA Year Ended December 31, Three Months Ended December 31, 2023202420232024 Steel components business: $ 11.0$ (19.5)$ 2.9$ 1.4Operating Profit 9.75.92.4—Add: Depreciation and amortization expense 20.7(13.6)5.31.4Steel components EBITDA —21.6—(1.4)Loss on sale of business $ 20.7$ 8.0$ 5.3$ —Steel components Adjusted EBITDA

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