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<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-07-25T01:12:57.0467210+00:00 -->
<!-- Version            : 5.0.1.463 -->
<!-- Package ID         : ca42b8bc6d4842878f9f2a59ca402998 -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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  <xsd:element id="mlm_AsphaltAndPavingMember" name="AsphaltAndPavingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="mlm_NoncashOrPartNoncashAcquisitionPropertiesAcquiredThroughAssetSwap" name="NoncashOrPartNoncashAcquisitionPropertiesAcquiredThroughAssetSwap" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="mlm_RemeasurementOfOperatingLeases" name="RemeasurementOfOperatingLeases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="mlm_IncreaseDecreaseInAssetReclamationCosts" name="IncreaseDecreaseInAssetReclamationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="mlm_OutOfPeriodExpense" name="OutOfPeriodExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="mlm_OutOfPeriodExpenseNetOfTax" name="OutOfPeriodExpenseNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
</xsd:schema>
