Exhibit 12.1

Computation of Earnings to Fixed Charges

CSX Corporation

Ratio of Earnings to Fixed Charges

(Millions of Dollars)

	FOR THE FISCAL PERIOD ENDED
	Sep. 28, 2007			Dec. 29, 2006			Dec. 30, 2005			Dec. 31, 2004			Dec. 26, 2003			Dec. 27, 2002
Earnings:
Earnings before Income Taxes	$	1,362		$	1,841		$	1,036		$	637		$	195		$	652
Interest Expense		302			392			423			435			418			445
Interest Portion of Fixed Rent		30			48			56			46			62			77
Undistributed earnings of unconsolidated subsidiaries		(35	)		(48	)		(56	)		(139	)		(32	)		(38	)
Earnings, as Adjusted	$	1,659		$	2,233		$	1,459		$	979		$	643		$	1,136
Fixed Charges:
Interest Expense	$	302		$	392		$	423		$	435		$	418		$	445
Capitalized Interest		4			3			2			3			3			3
Interest Portion of Fixed Rent		30			48			56			46			62			77
Fixed Charges	$	336		$	443		$	481		$	484		$	483		$	525
Ratio of Earnings to Fixed Charges		4.9	x		5.0	x		3.0	x		2.0	x		1.3	x		2.2

Computation of Earnings to Fixed Charges

CSX Transportation

Ratio of Earnings to Fixed Charges

(Millions of Dollars)

	FOR THE FISCAL PERIOD ENDED
	Sep. 28, 2007			Dec. 29, 2006			Dec. 30, 2005			Dec. 31, 2004			Dec. 26, 2003			Dec. 27, 2002
Earnings:
Earnings before Income Taxes	$	1,128		$	1,468		$	977		$	517		$	216		$	479
Interest Expense		186			218			166			111			102			113
Interest Portion of Fixed Rent		28			42			47			52			54			54
Undistributed earnings of unconsolidated subsidiaries		(25	)		(37	)		(30	)		(25	)		(20	)		(19	)
Earnings, as Adjusted	$	1,317		$	1,691		$	1,160		$	655		$	352		$	627
Fixed Charges:
Interest Expense	$	186		$	218		$	166		$	111		$	102		$	113
Capitalized Interest		4			3			2			3			3			3
Interest Portion of Fixed Rent		28			42			47			52			54			54
Fixed Charges	$	218		$	263		$	215		$	166		$	159		$	170
Ratio of Earnings to Fixed Charges		6.0	x		6.4	x		5.4	x		3.9	x		2.2	x		3.7