    <SEC-DOCUMENT>0000874238-24-000046-index.html : 20240319
    <SEC-HEADER>0000874238-24-000046.hdr.sgml : 20240319
    <ACCEPTANCE-DATETIME>20240319091003
    ACCESSION NUMBER:		0000874238-24-000046
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		62
    CONFORMED PERIOD OF REPORT:	20240319
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20240319
    DATE AS OF CHANGE:		20240319

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			STERLING INFRASTRUCTURE, INC.
    		CENTRAL INDEX KEY:			0000874238
    		STANDARD INDUSTRIAL CLASSIFICATION:	HEAVY CONSTRUCTION OTHER THAN BUILDING CONST - CONTRACTORS [1600]
    		ORGANIZATION NAME:           	05 Real Estate & Construction
    		IRS NUMBER:				251655321
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-31993
    		FILM NUMBER:		24761247

    	BUSINESS ADDRESS:
    		STREET 1:		1800 HUGHES LANDING BLVD.
    		STREET 2:		SUITE 250
    		CITY:			THE WOODLANDS
    		STATE:			TX
    		ZIP:			77380
    		BUSINESS PHONE:		281-214-0777

    	MAIL ADDRESS:
    		STREET 1:		1800 HUGHES LANDING BLVD.
    		STREET 2:		SUITE 250
    		CITY:			THE WOODLANDS
    		STATE:			TX
    		ZIP:			77380

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	STERLING CONSTRUCTION CO INC
    		DATE OF NAME CHANGE:	20020329

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OAKHURST CO INC
    		DATE OF NAME CHANGE:	19950831

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OAKHURST CAPITAL INC
    		DATE OF NAME CHANGE:	19931130
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>strl-20240319.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: strl-20240319.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>a20240319ex991pressrelease.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: a20240319ex991pressrelease.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>strl_2024sustainabilityr.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: strl_2024sustainabilityr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>strl-20240319.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: strl-20240319.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>strl-20240319_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: strl-20240319_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>strl-20240319_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: strl-20240319_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>sterlinginfrainclogo_4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: sterlinginfrainclogo_4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>strl-20240319_g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: strl-20240319_g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>strl_2024sustainabilityr001.jpg
    <DESCRIPTION>PAGE 1
    <TEXT>
    Document 9 - file: strl_2024sustainabilityr001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>strl_2024sustainabilityr002.jpg
    <DESCRIPTION>PAGE 2
    <TEXT>
    Document 10 - file: strl_2024sustainabilityr002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>strl_2024sustainabilityr003.jpg
    <DESCRIPTION>PAGE 3
    <TEXT>
    Document 11 - file: strl_2024sustainabilityr003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>strl_2024sustainabilityr004.jpg
    <DESCRIPTION>PAGE 4
    <TEXT>
    Document 12 - file: strl_2024sustainabilityr004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>strl_2024sustainabilityr005.jpg
    <DESCRIPTION>PAGE 5
    <TEXT>
    Document 13 - file: strl_2024sustainabilityr005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>strl_2024sustainabilityr006.jpg
    <DESCRIPTION>PAGE 6
    <TEXT>
    Document 14 - file: strl_2024sustainabilityr006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>strl_2024sustainabilityr007.jpg
    <DESCRIPTION>PAGE 7
    <TEXT>
    Document 15 - file: strl_2024sustainabilityr007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>strl_2024sustainabilityr008.jpg
    <DESCRIPTION>PAGE 8
    <TEXT>
    Document 16 - file: strl_2024sustainabilityr008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>strl_2024sustainabilityr009.jpg
    <DESCRIPTION>PAGE 9
    <TEXT>
    Document 17 - file: strl_2024sustainabilityr009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>strl_2024sustainabilityr010.jpg
    <DESCRIPTION>PAGE 10
    <TEXT>
    Document 18 - file: strl_2024sustainabilityr010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>strl_2024sustainabilityr011.jpg
    <DESCRIPTION>PAGE 11
    <TEXT>
    Document 19 - file: strl_2024sustainabilityr011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>strl_2024sustainabilityr012.jpg
    <DESCRIPTION>PAGE 12
    <TEXT>
    Document 20 - file: strl_2024sustainabilityr012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>strl_2024sustainabilityr013.jpg
    <DESCRIPTION>PAGE 13
    <TEXT>
    Document 21 - file: strl_2024sustainabilityr013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>strl_2024sustainabilityr014.jpg
    <DESCRIPTION>PAGE 14
    <TEXT>
    Document 22 - file: strl_2024sustainabilityr014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>strl_2024sustainabilityr015.jpg
    <DESCRIPTION>PAGE 15
    <TEXT>
    Document 23 - file: strl_2024sustainabilityr015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>strl_2024sustainabilityr016.jpg
    <DESCRIPTION>PAGE 16
    <TEXT>
    Document 24 - file: strl_2024sustainabilityr016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>strl_2024sustainabilityr017.jpg
    <DESCRIPTION>PAGE 17
    <TEXT>
    Document 25 - file: strl_2024sustainabilityr017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>strl_2024sustainabilityr018.jpg
    <DESCRIPTION>PAGE 18
    <TEXT>
    Document 26 - file: strl_2024sustainabilityr018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>strl_2024sustainabilityr019.jpg
    <DESCRIPTION>PAGE 19
    <TEXT>
    Document 27 - file: strl_2024sustainabilityr019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>strl_2024sustainabilityr020.jpg
    <DESCRIPTION>PAGE 20
    <TEXT>
    Document 28 - file: strl_2024sustainabilityr020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>strl_2024sustainabilityr021.jpg
    <DESCRIPTION>PAGE 21
    <TEXT>
    Document 29 - file: strl_2024sustainabilityr021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>strl_2024sustainabilityr022.jpg
    <DESCRIPTION>PAGE 22
    <TEXT>
    Document 30 - file: strl_2024sustainabilityr022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>strl_2024sustainabilityr023.jpg
    <DESCRIPTION>PAGE 23
    <TEXT>
    Document 31 - file: strl_2024sustainabilityr023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>strl_2024sustainabilityr024.jpg
    <DESCRIPTION>PAGE 24
    <TEXT>
    Document 32 - file: strl_2024sustainabilityr024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>strl_2024sustainabilityr025.jpg
    <DESCRIPTION>PAGE 25
    <TEXT>
    Document 33 - file: strl_2024sustainabilityr025.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>strl_2024sustainabilityr026.jpg
    <DESCRIPTION>PAGE 26
    <TEXT>
    Document 34 - file: strl_2024sustainabilityr026.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>strl_2024sustainabilityr027.jpg
    <DESCRIPTION>PAGE 27
    <TEXT>
    Document 35 - file: strl_2024sustainabilityr027.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>strl_2024sustainabilityr028.jpg
    <DESCRIPTION>PAGE 28
    <TEXT>
    Document 36 - file: strl_2024sustainabilityr028.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>strl_2024sustainabilityr029.jpg
    <DESCRIPTION>PAGE 29
    <TEXT>
    Document 37 - file: strl_2024sustainabilityr029.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>strl_2024sustainabilityr030.jpg
    <DESCRIPTION>PAGE 30
    <TEXT>
    Document 38 - file: strl_2024sustainabilityr030.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>strl_2024sustainabilityr031.jpg
    <DESCRIPTION>PAGE 31
    <TEXT>
    Document 39 - file: strl_2024sustainabilityr031.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>strl_2024sustainabilityr032.jpg
    <DESCRIPTION>PAGE 32
    <TEXT>
    Document 40 - file: strl_2024sustainabilityr032.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>strl_2024sustainabilityr033.jpg
    <DESCRIPTION>PAGE 33
    <TEXT>
    Document 41 - file: strl_2024sustainabilityr033.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>strl_2024sustainabilityr034.jpg
    <DESCRIPTION>PAGE 34
    <TEXT>
    Document 42 - file: strl_2024sustainabilityr034.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>strl_2024sustainabilityr035.jpg
    <DESCRIPTION>PAGE 35
    <TEXT>
    Document 43 - file: strl_2024sustainabilityr035.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>44
    <FILENAME>strl_2024sustainabilityr036.jpg
    <DESCRIPTION>PAGE 36
    <TEXT>
    Document 44 - file: strl_2024sustainabilityr036.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>45
    <FILENAME>strl_2024sustainabilityr037.jpg
    <DESCRIPTION>PAGE 37
    <TEXT>
    Document 45 - file: strl_2024sustainabilityr037.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>46
    <FILENAME>strl_2024sustainabilityr038.jpg
    <DESCRIPTION>PAGE 38
    <TEXT>
    Document 46 - file: strl_2024sustainabilityr038.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>47
    <FILENAME>strl_2024sustainabilityr039.jpg
    <DESCRIPTION>PAGE 39
    <TEXT>
    Document 47 - file: strl_2024sustainabilityr039.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>48
    <FILENAME>strl_2024sustainabilityr040.jpg
    <DESCRIPTION>PAGE 40
    <TEXT>
    Document 48 - file: strl_2024sustainabilityr040.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>49
    <FILENAME>strl_2024sustainabilityr041.jpg
    <DESCRIPTION>PAGE 41
    <TEXT>
    Document 49 - file: strl_2024sustainabilityr041.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>50
    <FILENAME>strl_2024sustainabilityr042.jpg
    <DESCRIPTION>PAGE 42
    <TEXT>
    Document 50 - file: strl_2024sustainabilityr042.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>51
    <FILENAME>strl_2024sustainabilityr043.jpg
    <DESCRIPTION>PAGE 43
    <TEXT>
    Document 51 - file: strl_2024sustainabilityr043.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>52
    <FILENAME>strl_2024sustainabilityr044.jpg
    <DESCRIPTION>PAGE 44
    <TEXT>
    Document 52 - file: strl_2024sustainabilityr044.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>53
    <FILENAME>strl_2024sustainabilityr045.jpg
    <DESCRIPTION>PAGE 45
    <TEXT>
    Document 53 - file: strl_2024sustainabilityr045.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>55
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 55 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>56
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 56 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>57
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 57 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>58
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 58 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>60
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 60 - file: FilingSummary.html

    Document 60 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>62
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 62 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>63
    <FILENAME>0000874238-24-000046-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 63 - file: 0000874238-24-000046-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>65
    <FILENAME>strl-20240319_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 65 - file: strl-20240319_htm.html

    Document 65 - RAW XML: strl-20240319_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>