-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 JCAbfVlVwiTvtQzfwTGfnnxGj/69MICbz2UCk+LhtDPVVeYcYA18KiuSU1DSZLFb
 bk7nKg44uT5tSkzS4cxlbg==

<SEC-DOCUMENT>0001181431-07-029191.txt : 20070503
<SEC-HEADER>0001181431-07-029191.hdr.sgml : 20070503
<ACCEPTANCE-DATETIME>20070503095845
ACCESSION NUMBER:		0001181431-07-029191
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070501
FILED AS OF DATE:		20070503
DATE AS OF CHANGE:		20070503

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MONROY CESAR
		CENTRAL INDEX KEY:			0001218972

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26025
		FILM NUMBER:		07813211

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		7134996200

	MAIL ADDRESS:	
		STREET 1:		2925 BRIARPARK
		STREET 2:		SUITE 1050
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			US CONCRETE INC
		CENTRAL INDEX KEY:			0001073429
		STANDARD INDUSTRIAL CLASSIFICATION:	CONCRETE PRODUCTS, EXCEPT BLOCK & BRICK [3272]
		IRS NUMBER:				760586680
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2925 BRIARPARK
		STREET 2:		SUITE 1050
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042
		BUSINESS PHONE:		713-499-6200

	MAIL ADDRESS:	
		STREET 1:		2925 BRIARPARK
		STREET 2:		SUITE 1050
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RMX INDUSTRIES INC
		DATE OF NAME CHANGE:	19981113
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd156822.xml
<DESCRIPTION>5/1/2007 RSA VESTING
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-05-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001073429</issuerCik>
        <issuerName>US CONCRETE INC</issuerName>
        <issuerTradingSymbol>RMIX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001218972</rptOwnerCik>
            <rptOwnerName>MONROY CESAR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2925 BRIARPARK, SUITE 1050</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77042</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Treasurer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-05-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>778</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.51</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14512</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents 778 shares withheld on May 1, 2007 to cover taxes associated with the vesting of certain shares of restricted stock previously granted to the Reporting Person under the U.S. Concrete, Inc. 1999 Incentive Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Stephanie Schweigart Collins, as Attorney-in-Fact for Cesar Monroy</signatureName>
        <signatureDate>2007-05-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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