    <SEC-DOCUMENT>0000950170-25-039717-index.html : 20250317
    <SEC-HEADER>0000950170-25-039717.hdr.sgml : 20250317
    <ACCEPTANCE-DATETIME>20250314193806
    ACCESSION NUMBER:		0000950170-25-039717
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20241231
    FILED AS OF DATE:		20250317
    DATE AS OF CHANGE:		20250314
    EFFECTIVENESS DATE:		20250317

    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]
    		ORGANIZATION NAME:           	05 Real Estate & Construction
    		IRS NUMBER:				205336063
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-33225
    		FILM NUMBER:		25741930

    	BUSINESS ADDRESS:
    		STREET 1:		9811 KATY FREEWAY
    		STREET 2:		SUITE 1200
    		CITY:			HOUSTON
    		STATE:			TX
    		ZIP:			77024
    		BUSINESS PHONE:		(346) 359-1010

    	MAIL ADDRESS:
    		STREET 1:		9811 KATY FREEWAY
    		STREET 2:		SUITE 1200
    		CITY:			HOUSTON
    		STATE:			TX
    		ZIP:			77024

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Great Lakes Dredge & Dock Holdings Corp.
    		DATE OF NAME CHANGE:	20060808
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>gldd-10k-20241231-ars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: gldd-10k-20241231-ars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>