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        <link:definition>101 - Document - Document And Entity Information</link:definition>

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        <link:definition>102 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>

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        <link:definition>103 - Statement - CONSOLIDATED BALANCE SHEETS [Parenthetical]</link:definition>

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        <link:definition>104 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME</link:definition>

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        <link:definition>105 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS&#39; EQUITY</link:definition>

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        <link:definition>106 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>

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        <link:definition>107 - Disclosure - Organization, Business and Significant Accounting Policies</link:definition>

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        <link:definition>108 - Disclosure - Acquisitions</link:definition>

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        <link:definition>109 - Disclosure - Fair Value Measurements</link:definition>

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        <link:definition>110 - Disclosure - Accounts Receivable</link:definition>

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        <link:definition>111 - Disclosure - Contracts in Process</link:definition>

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        <link:definition>112 - Disclosure - Property and Equipment</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

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      <link:roleType roleURI="http://www.myrgroup.com/role/GoodwillAndIntangibleAssets" id="GoodwillAndIntangibleAssets">
        <link:definition>113 - Disclosure - Goodwill and Intangible Assets</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

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      <link:roleType roleURI="http://www.myrgroup.com/role/AccruedLiabilities" id="AccruedLiabilities">
        <link:definition>114 - Disclosure - Accrued Liabilities</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

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        <link:definition>115 - Disclosure - Debt</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>116 - Disclosure - Income Taxes</link:definition>

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        <link:definition>117 - Disclosure - Commitments and Contingencies</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>118 - Disclosure - Lease Obligations</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>119 - Disclosure - Stock-Based Compensation</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

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        <link:definition>120 - Disclosure - Employee Benefit Plans</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>121 - Disclosure - Segment Information</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>122 - Disclosure - Earnings Per Share</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>123 - Disclosure - Quarterly Financial Data (Unaudited)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/OrganizationBusinessAndSignificantAccountingPoliciesPolicies" id="OrganizationBusinessAndSignificantAccountingPoliciesPolicies">
        <link:definition>124 - Disclosure - Organization, Business and Significant Accounting Policies (Policies)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>125 - Disclosure - Acquisitions (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/AccountsReceivableTables" id="AccountsReceivableTables">
        <link:definition>126 - Disclosure - Accounts Receivable (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/ContractsInProcessTables" id="ContractsInProcessTables">
        <link:definition>127 - Disclosure - Contracts in Process (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/PropertyAndEquipmentTables" id="PropertyAndEquipmentTables">
        <link:definition>128 - Disclosure - Property and Equipment (Tables)</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/GoodwillAndIntangibleAssetsTables" id="GoodwillAndIntangibleAssetsTables">
        <link:definition>129 - Disclosure - Goodwill and Intangible Assets (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/AccruedLiabilitiesTables" id="AccruedLiabilitiesTables">
        <link:definition>130 - Disclosure - Accrued Liabilities (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/IncomeTaxesTables" id="IncomeTaxesTables">
        <link:definition>131 - Disclosure - Income Taxes (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/CommitmentsAndContingenciesTables" id="CommitmentsAndContingenciesTables">
        <link:definition>132 - Disclosure - Commitments and Contingencies (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/LeaseObligationsTables" id="LeaseObligationsTables">
        <link:definition>133 - Disclosure - Lease Obligations (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationTables" id="StockbasedCompensationTables">
        <link:definition>134 - Disclosure - Stock-Based Compensation (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/EmployeeBenefitPlansTables" id="EmployeeBenefitPlansTables">
        <link:definition>135 - Disclosure - Employee Benefit Plans (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/SegmentInformationTables" id="SegmentInformationTables">
        <link:definition>136 - Disclosure - Segment Information (Tables)</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

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      <link:roleType roleURI="http://www.myrgroup.com/role/EarningsPerShareTables" id="EarningsPerShareTables">
        <link:definition>137 - Disclosure - Earnings Per Share (Tables)</link:definition>

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        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/QuarterlyFinancialDataUnauditedTables" id="QuarterlyFinancialDataUnauditedTables">
        <link:definition>138 - Disclosure - Quarterly Financial Data (Unaudited) (Tables)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/OrganizationBusinessAndSignificantAccountingPoliciesDetailsTextual" id="OrganizationBusinessAndSignificantAccountingPoliciesDetailsTextual">
        <link:definition>139 - Disclosure - Organization, Business and Significant Accounting Policies (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/AcquisitionsDetails" id="AcquisitionsDetails">
        <link:definition>140 - Disclosure - Acquisitions (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/AcquisitionsDetailsTextual" id="AcquisitionsDetailsTextual">
        <link:definition>141 - Disclosure - Acquisitions (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/AccountsReceivableDetails" id="AccountsReceivableDetails">
        <link:definition>142 - Disclosure - Accounts Receivable (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/AccountsReceivableDetails1" id="AccountsReceivableDetails1">
        <link:definition>143 - Disclosure - Accounts Receivable (Details 1)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/ContractsInProcessDetails" id="ContractsInProcessDetails">
        <link:definition>144 - Disclosure - Contracts in Process (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/ContractsInProcessDetails1" id="ContractsInProcessDetails1">
        <link:definition>145 - Disclosure - Contracts in Process (Details 1)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/PropertyAndEquipmentDetails" id="PropertyAndEquipmentDetails">
        <link:definition>146 - Disclosure - Property and Equipment (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/PropertyAndEquipmentDetailsTextual" id="PropertyAndEquipmentDetailsTextual">
        <link:definition>147 - Disclosure - Property and Equipment (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/GoodwillAndIntangibleAssetsDetails" id="GoodwillAndIntangibleAssetsDetails">
        <link:definition>148 - Disclosure - Goodwill and Intangible Assets (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/GoodwillAndIntangibleAssetsDetailsTextual" id="GoodwillAndIntangibleAssetsDetailsTextual">
        <link:definition>149 - Disclosure - Goodwill and Intangible Assets (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/AccruedLiabilitiesDetails" id="AccruedLiabilitiesDetails">
        <link:definition>150 - Disclosure - Accrued Liabilities (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/DebtDetailsTextual" id="DebtDetailsTextual">
        <link:definition>151 - Disclosure - Debt (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/IncomeTaxesDetails" id="IncomeTaxesDetails">
        <link:definition>152 - Disclosure - Income Taxes (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/IncomeTaxesDetails1" id="IncomeTaxesDetails1">
        <link:definition>153 - Disclosure - Income Taxes (Details 1)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/IncomeTaxesDetails2" id="IncomeTaxesDetails2">
        <link:definition>154 - Disclosure - Income Taxes (Details 2)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/IncomeTaxesDetails3" id="IncomeTaxesDetails3">
        <link:definition>155 - Disclosure - Income Taxes (Details 3)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/IncomeTaxesDetails4" id="IncomeTaxesDetails4">
        <link:definition>156 - Disclosure - Income Taxes (Details 4)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/IncomeTaxesDetailsTextual" id="IncomeTaxesDetailsTextual">
        <link:definition>157 - Disclosure - Income Taxes (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.myrgroup.com/role/CommitmentsAndContingenciesDetails" id="CommitmentsAndContingenciesDetails">
        <link:definition>158 - Disclosure - Commitments and Contingencies (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/CommitmentsAndContingenciesDetailsTextual" id="CommitmentsAndContingenciesDetailsTextual">
        <link:definition>159 - Disclosure - Commitments and Contingencies (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/LeaseObligationsDetails" id="LeaseObligationsDetails">
        <link:definition>160 - Disclosure - Lease Obligations (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/LeaseObligationsDetailsTextual" id="LeaseObligationsDetailsTextual">
        <link:definition>161 - Disclosure - Lease Obligations (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationDetails" id="StockbasedCompensationDetails">
        <link:definition>162 - Disclosure - Stock-Based Compensation (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationDetails1" id="StockbasedCompensationDetails1">
        <link:definition>163 - Disclosure - Stock-Based Compensation (Details 1)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationDetails2" id="StockbasedCompensationDetails2">
        <link:definition>164 - Disclosure - Stock-Based Compensation (Details 2)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationDetails3" id="StockbasedCompensationDetails3">
        <link:definition>165 - Disclosure - Stock-Based Compensation (Details 3)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationDetails4" id="StockbasedCompensationDetails4">
        <link:definition>166 - Disclosure - Stock-Based Compensation (Details 4)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationDetails5" id="StockbasedCompensationDetails5">
        <link:definition>167 - Disclosure - Stock-Based Compensation (Details 5)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/StockbasedCompensationDetailsTextual" id="StockbasedCompensationDetailsTextual">
        <link:definition>168 - Disclosure - Stock-Based Compensation (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/EmployeeBenefitPlansDetails" id="EmployeeBenefitPlansDetails">
        <link:definition>169 - Disclosure - Employee Benefit Plans (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/EmployeeBenefitPlansDetailsTextual" id="EmployeeBenefitPlansDetailsTextual">
        <link:definition>170 - Disclosure - Employee Benefit Plans (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/SegmentInformationDetails" id="SegmentInformationDetails">
        <link:definition>171 - Disclosure - Segment Information (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/SegmentInformationDetails1" id="SegmentInformationDetails1">
        <link:definition>172 - Disclosure - Segment Information (Details 1)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/SegmentInformationDetails2" id="SegmentInformationDetails2">
        <link:definition>173 - Disclosure - Segment Information (Details 2)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/SegmentInformationDetailsTextual" id="SegmentInformationDetailsTextual">
        <link:definition>174 - Disclosure - Segment Information (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/EarningsPerShareDetails" id="EarningsPerShareDetails">
        <link:definition>175 - Disclosure - Earnings Per Share (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/EarningsPerShareDetails1" id="EarningsPerShareDetails1">
        <link:definition>176 - Disclosure - Earnings Per Share (Details 1)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/EarningsPerShareDetailsTextual" id="EarningsPerShareDetailsTextual">
        <link:definition>177 - Disclosure - Earnings Per Share (Details Textual)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:roleType roleURI="http://www.myrgroup.com/role/QuarterlyFinancialDataUnauditedDetails" id="QuarterlyFinancialDataUnauditedDetails">
        <link:definition>178 - Disclosure - Quarterly Financial Data (Unaudited) (Details)</link:definition>

        <link:usedOn>link:presentationLink</link:usedOn>

        <link:usedOn>link:definitionLink</link:usedOn>

        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>

      <link:linkbaseRef xlink:type="simple" xlink:href="myrg-20161231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />

      <link:linkbaseRef xlink:type="simple" xlink:href="myrg-20161231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />

      <link:linkbaseRef xlink:type="simple" xlink:href="myrg-20161231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />

      <link:linkbaseRef xlink:type="simple" xlink:href="myrg-20161231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
    </appinfo>
  </annotation>

  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />

  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />

  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />

  <import namespace="http://fasb.org/us-gaap/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd" />

  <import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />

  <import namespace="http://xbrl.sec.gov/country/2016-01-31" schemaLocation="http://xbrl.sec.gov/country/2016/country-2016-01-31.xsd" />

  <import namespace="http://xbrl.sec.gov/currency/2016-01-31" schemaLocation="http://xbrl.sec.gov/currency/2016/currency-2016-01-31.xsd" />

  <import namespace="http://xbrl.sec.gov/exch/2016-01-31" schemaLocation="http://xbrl.sec.gov/exch/2016/exch-2016-01-31.xsd" />

  <import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />

  <import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />

  <import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />

  <import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />

  <import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />

  <import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />

  <import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" />

  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />

  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />

  <import namespace="http://fasb.org/us-types/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-types-2016-01-31.xsd" />

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  <element name="OrganizationAndBusinessPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_OrganizationAndBusinessPolicyTextBlock" />

  <element name="OrganizationConsolidationAndPresentationOfFinancialStatementsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_OrganizationConsolidationAndPresentationOfFinancialStatementsTable" />

  <element name="CostEstimateRevisionGrossMarginIncreaseDecreasePercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_CostEstimateRevisionGrossMarginIncreaseDecreasePercentage" />

  <element name="ContractsInProcessTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_ContractsInProcessTable" />

  <element name="ContractsInProcessLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ContractsInProcessLineItems" />

  <element name="AggregateCostsIncurredOnUncompletedContractsAndEstimatedEarnings" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="myrg_AggregateCostsIncurredOnUncompletedContractsAndEstimatedEarnings" />

  <element name="BillingsToDate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="credit" substitutionGroup="xbrli:item" id="myrg_BillingsToDate" />

  <element name="NetCostsAndEstimatedEarningsInExcessOfBillings" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="myrg_NetCostsAndEstimatedEarningsInExcessOfBillings" />

  <element name="IncomeTaxesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_IncomeTaxesTable" />

  <element name="IncomeTaxesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_IncomeTaxesLineItems" />

  <element name="CommitmentsAndContingenciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_CommitmentsAndContingenciesTable" />

  <element name="CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_CommitmentsAndContingenciesLineItems" />

  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherthanOptionsForfeitedForPerformanceBelowTargetInPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherthanOptionsForfeitedForPerformanceBelowTargetInPeriod" />

  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEarnedForPerformanceAboveTargetInPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEarnedForPerformanceAboveTargetInPeriod" />

  <element name="SegmentTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_SegmentTable" />

  <element name="TdMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_TdMember" />

  <element name="CiMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_CiMember" />

  <element name="EariningsPerShareTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_EariningsPerShareTable" />

  <element name="EarningsPerShareLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_EarningsPerShareLineItems" />

  <element name="InsurancePolicyPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_InsurancePolicyPolicyTextBlock" />

  <element name="LossContingencyInsurancePolicyDeductibleForEachLineOfCoverageExcludingHealth" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="myrg_LossContingencyInsurancePolicyDeductibleForEachLineOfCoverageExcludingHealth" />

  <element name="NumberOfCustomersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_NumberOfCustomersMember" />

  <element name="TopTenLargestCustomerMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_TopTenLargestCustomerMember" />

  <element name="LossContingencyHealthInsuranceDeductibleForQualifiedIndividuals" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="myrg_LossContingencyHealthInsuranceDeductibleForQualifiedIndividuals" />

  <element name="ScheduleOfRollForwardActivityOfAllowanceForDoubtfulAccountstableTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ScheduleOfRollForwardActivityOfAllowanceForDoubtfulAccountstableTableTextBlock" />

  <element name="AccountsReceivableTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_AccountsReceivableTable" />

  <element name="ScheduleOfQuarterlyFinancialInformationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_ScheduleOfQuarterlyFinancialInformationTable" />

  <element name="ScheduleOfQuarterlyFinancialInformationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ScheduleOfQuarterlyFinancialInformationLineItems" />

  <element name="ScheduleOfSegmentReportingInformationRelatedToAllocationOfDepreciationAndAmortizationBySegmentTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ScheduleOfSegmentReportingInformationRelatedToAllocationOfDepreciationAndAmortizationBySegmentTableTextBlock" />

  <element name="ConstructionEquipmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ConstructionEquipmentMember" />

  <element name="NationalElectricalBenefitFundMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_NationalElectricalBenefitFundMember" />

  <element name="EighthDistrictElectricalManagementPensionFundMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_EighthDistrictElectricalManagementPensionFundMember" />

  <element name="IbewLocal1249PensionPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_IbewLocal1249PensionPlanMember" />

  <element name="NationalElectricalAnnuityPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_NationalElectricalAnnuityPlanMember" />

  <element name="ScheduleOfSharebasedCompensationphantomStockActivityTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ScheduleOfSharebasedCompensationphantomStockActivityTableTextBlock" />

  <element name="PayablesAndAccrualsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_PayablesAndAccrualsTable" />

  <element name="OtherCurrentLiabilitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_OtherCurrentLiabilitiesLineItems" />

  <element name="AccruedPayrollAndIncentiveCompensationCurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="credit" substitutionGroup="xbrli:item" id="myrg_AccruedPayrollAndIncentiveCompensationCurrent" />

  <element name="AccruedUnionDuesAndBenefits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="credit" substitutionGroup="xbrli:item" id="myrg_AccruedUnionDuesAndBenefits" />

  <element name="TAndDMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_TAndDMember" />

  <element name="CAndIMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_CAndIMember" />

  <element name="ScheduleOfIntangibleAssetsAndGoodwillLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ScheduleOfIntangibleAssetsAndGoodwillLineItems" />

  <element name="ScheduleOfDefinedContributionPlansTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="myrg_ScheduleOfDefinedContributionPlansTable" />

  <element name="DefinedContributionPlansAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="myrg_DefinedContributionPlansAxis" />

  <element name="DefinedContributionPlansDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_DefinedContributionPlansDomain" />

  <element name="EmployeeBenefitPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_EmployeeBenefitPlanMember" />

  <element name="ProfitSharingAndThriftEmployeeBenefitPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ProfitSharingAndThriftEmployeeBenefitPlanMember" />

  <element name="MultiemployerPlansRedZoneFundedStatusPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_MultiemployerPlansRedZoneFundedStatusPercentage" />

  <element name="MultiemployerPlansGreenZoneFundedStatusPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_MultiemployerPlansGreenZoneFundedStatusPercentage" />

  <element name="SyndicatedCreditAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_SyndicatedCreditAgreementMember" />

  <element name="MultiemployerPlansYellowZoneFundedStatusPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_MultiemployerPlansYellowZoneFundedStatusPercentage" />

  <element name="SwingLineLoansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_SwingLineLoansMember" />

  <element name="DefinedContributionPlansLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_DefinedContributionPlansLineItems" />

  <element name="EighthDistrictElectricalPensionFundMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_EighthDistrictElectricalPensionFundMember" />

  <element name="NumberOfLocalsCoveredUnderMultiemployerDefinedPlans" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="myrg_NumberOfLocalsCoveredUnderMultiemployerDefinedPlans" />

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  <element name="CostEstimateRevisionMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_CostEstimateRevisionMember" />

  <element name="IbewLocal769ManagementPensionPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_IbewLocal769ManagementPensionPlanMember" />

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  <element name="ConsolidatedBalanceSheetMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ConsolidatedBalanceSheetMember" />

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  <element name="ESBoulosCompanyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_ESBoulosCompanyMember" />

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  <element name="TwoThousandElevenCreditFacilityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="myrg_TwoThousandElevenCreditFacilityMember" />

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</schema>






