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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 HTrDJXQ2OTSC8xRfl1C0ax8Zv094KM9f81Oev+a8qONm57wNvugDyc9zzTdyhIW6
 QI8UxCCUDUQxES4UwGQtfg==

<SEC-DOCUMENT>9999999995-09-003363.txt : 20091207
<SEC-HEADER>9999999995-09-003363.hdr.sgml : 20091207
<ACCEPTANCE-DATETIME>20091207001523
ACCESSION NUMBER:		9999999995-09-003363
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20091204
DATE AS OF CHANGE:		20091207
EFFECTIVENESS DATE:		20091204

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Great Lakes Dredge & Dock CORP
		CENTRAL INDEX KEY:			0001372020
		STANDARD INDUSTRIAL CLASSIFICATION:	HEAVY CONSTRUCTION OTHER THAN BUILDING CONST - CONTRACTORS [1600]
		IRS NUMBER:				205336063
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-153207
		FILM NUMBER:		091224858

	BUSINESS ADDRESS:	
		STREET 1:		2122 YORK ROAD
		CITY:			OAK BROOK
		STATE:			IL
		ZIP:			60523
		BUSINESS PHONE:		630-574-3000

	MAIL ADDRESS:	
		STREET 1:		2122 YORK ROAD
		CITY:			OAK BROOK
		STATE:			IL
		ZIP:			60523

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Great Lakes Dredge & Dock Holdings Corp.
		DATE OF NAME CHANGE:	20060808
</SEC-HEADER>
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<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2009-12-04</finalEffectivenessDispDate>
        <accessionNumber>0001047469-09-010430</accessionNumber>
        <submissionType>POS AM</submissionType>
        <filer>
            <cik>0001372020</cik>
            <entityName>Great Lakes Dredge &amp; Dock CORP</entityName>
            <fileNumber>333-153207</fileNumber>
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