<SEC-DOCUMENT>0000900440-19-000049.txt : 20190501
<SEC-HEADER>0000900440-19-000049.hdr.sgml : 20190501
<ACCEPTANCE-DATETIME>20190501161704
ACCESSION NUMBER:		0000900440-19-000049
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190430
FILED AS OF DATE:		20190501
DATE AS OF CHANGE:		20190501

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Milrod Donna M
		CENTRAL INDEX KEY:			0001493239

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31429
		FILM NUMBER:		19787788

	MAIL ADDRESS:	
		STREET 1:		60 WALL STREET, 42ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VALMONT INDUSTRIES INC
		CENTRAL INDEX KEY:			0000102729
		STANDARD INDUSTRIAL CLASSIFICATION:	FABRICATED STRUCTURAL METAL PRODUCTS [3440]
		IRS NUMBER:				470351813
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1229

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 358
		STREET 2:		HWY 275
		CITY:			VALLEY
		STATE:			NE
		ZIP:			68064
		BUSINESS PHONE:		4023592201

	MAIL ADDRESS:	
		STREET 1:		P O BOX 358 - HIGHWAY 275
		CITY:			VALLEY
		STATE:			NE
		ZIP:			68064-0358

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VALLEY MANUFACTURING CO
		DATE OF NAME CHANGE:	19680822
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-04-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000102729</issuerCik>
        <issuerName>VALMONT INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>VMI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001493239</rptOwnerCik>
            <rptOwnerName>Milrod Donna M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>VALMONT INDUSTRIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE VALMONT PLAZA</rptOwnerStreet2>
            <rptOwnerCity>OMAHA</rptOwnerCity>
            <rptOwnerState>NE</rptOwnerState>
            <rptOwnerZipCode>68154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-04-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>964</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1247</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock unit award which vests on the anniversary of the grant date, unless deferred by reporting person, and on vesting settled in an equal number of shares of common stock.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Andrew Massey on behalf of Donna Milrod</signatureName>
        <signatureDate>2019-05-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
