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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UZVf18SocfPodth3DSmdAhJqJ8E0vGfEC4oupwL1jzEoBedzkz85CT30it/jYYzL
 OMQLTdGj98YAKLQNzEZjTg==

<SEC-DOCUMENT>9999999995-10-001799.txt : 20100615
<SEC-HEADER>9999999995-10-001799.hdr.sgml : 20100615
<ACCEPTANCE-DATETIME>20100615001515
ACCESSION NUMBER:		9999999995-10-001799
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20100614
DATE AS OF CHANGE:		20100615
EFFECTIVENESS DATE:		20100614

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CSX CORP
		CENTRAL INDEX KEY:			0000277948
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROADS, LINE-HAUL OPERATING [4011]
		IRS NUMBER:				621051971
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1226

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-166186
		FILM NUMBER:		10896208

	BUSINESS ADDRESS:	
		STREET 1:		500 WATER STREET
		STREET 2:		15TH FLOOR
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202
		BUSINESS PHONE:		9043593200

	MAIL ADDRESS:	
		STREET 1:		500 WATER STREET
		STREET 2:		15TH FLOOR
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2010-06-14</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>10:00:00</finalEffectivenessDispTime>
        <form>S-4</form>
        <filer>
            <cik>0000277948</cik>
            <entityName>CSX CORP</entityName>
            <fileNumber>333-166186</fileNumber>
        </filer>
    </effectiveData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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