    <SEC-DOCUMENT>0000099780-17-000138-index.html : 20171213
    <SEC-HEADER>0000099780-17-000138.hdr.sgml : 20171213
    <ACCEPTANCE-DATETIME>20171212182225
    ACCESSION NUMBER:		0000099780-17-000138
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		14
    CONFORMED PERIOD OF REPORT:	20171212
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Other Events
    FILED AS OF DATE:		20171213
    DATE AS OF CHANGE:		20171212

    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:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-06903
    		FILM NUMBER:		171252699

    	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>8-K
    <SEQUENCE>1
    <FILENAME>a121217spinoffannouncement.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a121217spinoffannouncement.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>exh991-spinoffpressrelease.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: exh991-spinoffpressrelease.htm

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>spinoffannouncementfaqs.htm
    <DESCRIPTION>EXHIBIT 99.3
    <TEXT>
    Document 4 - file: spinoffannouncementfaqs.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>logoa11.jpg
    <TEXT>
    Document 5 - file: logoa11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>spinoffannouncementfaqs001.jpg
    <TEXT>
    Document 6 - file: spinoffannouncementfaqs001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>spinoffinvpres001.jpg
    <TEXT>
    Document 7 - file: spinoffinvpres001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>spinoffinvpres002.jpg
    <TEXT>
    Document 8 - file: spinoffinvpres002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>spinoffinvpres003.jpg
    <TEXT>
    Document 9 - file: spinoffinvpres003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>spinoffinvpres004.jpg
    <TEXT>
    Document 10 - file: spinoffinvpres004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>spinoffinvpres005.jpg
    <TEXT>
    Document 11 - file: spinoffinvpres005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>spinoffinvpres006.jpg
    <TEXT>
    Document 12 - file: spinoffinvpres006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>spinoffinvpres007.jpg
    <TEXT>
    Document 13 - file: spinoffinvpres007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>trinityinclogoverticalhrblac.jpg
    <TEXT>
    Document 14 - file: trinityinclogoverticalhrblac.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>