<SEC-DOCUMENT>0000099780-18-000105-index.html : 20180523
<SEC-HEADER>0000099780-18-000105.hdr.sgml : 20180523
<ACCEPTANCE-DATETIME>20180523160759
ACCESSION NUMBER:		0000099780-18-000105
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		3
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20171231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20171231
</ITEM>
</RULE>
FILED AS OF DATE:		20180523
DATE AS OF CHANGE:		20180523

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:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06903
		FILM NUMBER:		18855169

	BUSINESS ADDRESS:	
		STREET 1:		2525 STEMMONS FREEWAY
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75207-2401
		BUSINESS PHONE:		214-631-4420

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TRINITY STEEL CO INC
		DATE OF NAME CHANGE:	19720407
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>trn12312017sd.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: trn12312017sd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>exh101conflictmineralsrepo.htm
<DESCRIPTION>EXHIBIT 1.01
<TEXT>
Document 2 - file: exh101conflictmineralsrepo.htm

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

</DOCUMENT>
</SEC-DOCUMENT>