<SEC-DOCUMENT>0000099780-22-000096-index.html : 20220609
<SEC-HEADER>0000099780-22-000096.hdr.sgml : 20220609
<ACCEPTANCE-DATETIME>20220609160345
ACCESSION NUMBER:		0000099780-22-000096
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20211231
FILED AS OF DATE:		20220609
DATE AS OF CHANGE:		20220609

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRINITY INDUSTRIES INC
		CENTRAL INDEX KEY:			0000099780
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROAD EQUIPMENT [3743]
		IRS NUMBER:				750225040
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06903
		FILM NUMBER:		221005963

	BUSINESS ADDRESS:	
		STREET 1:		14221 N DALLAS PARKWAY
		STREET 2:		SUITE 1100
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75254
		BUSINESS PHONE:		214-631-4420

	MAIL ADDRESS:	
		STREET 1:		14221 N DALLAS PARKWAY
		STREET 2:		SUITE 1100
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75254

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TRINITY STEEL CO INC
		DATE OF NAME CHANGE:	19720407
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>trn401kplan-2021.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: trn401kplan-2021.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>exh23-401kplanx2021.htm
<DESCRIPTION>EX-23
<TEXT>
Document 2 - file: exh23-401kplanx2021.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>signatureblacktrinity02.jpg
<TEXT>
Document 3 - file: signatureblacktrinity02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>trinityinclogoverticalhrbl.jpg
<TEXT>
Document 4 - file: trinityinclogoverticalhrbl.jpg

</DOCUMENT>
</SEC-DOCUMENT>