Property and Equipment (including Concession Assets)

The following tables list the major categories of property and equipment, including concession assets, as well as the weighted-average composite depreciation rate for each category (in millions):



As of December 31, 2014	Cost		Accumulated Depreciation			Net Book Value		Depreciation Rates for 2014
Land	$	216.8	$	—		$	216.8	N/A
Concession land rights	141.2		(22.3		)	118.9		1.0	%
Rail and other track material	1,707.6		(361.1		)	1,346.5		1.9-3.2%
Ties	1,484.7		(312.6		)	1,172.1		2.0-4.2%
Grading	839.6		(137.9		)	701.7		1.0	%
Bridges and tunnels	669.5		(123.8		)	545.7		1.2	%
Ballast	649.8		(170.0		)	479.8		2.7-4.8%
Other (a)	943.5		(275.6		)	667.9		3.1	%
Total road property	6,294.7		(1,381.0		)	4,913.7		2.8	%
Locomotives	1,310.3		(238.3		)	1,072.0		4.7	%
Freight cars	610.6		(98.3		)	512.3		5.3	%
Other equipment	59.0		(18.5		)	40.5		8.2	%
Total equipment	1,979.9		(355.1		)	1,624.8		5.0	%
Technology and other	160.9		(121.9		)	39.0		13.2	%
Construction in progress	241.5		—			241.5		N/A
Total property and equipment (including concession assets)	$	9,035.0	$	(1,880.3	)	$	7,154.7	N/A

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(a)	Other includes signals, buildings and other road assets.



As of December 31, 2013	Cost		Accumulated Depreciation			Net Book Value		Depreciation Rates for 2013
Land	$	216.4	$	—		$	216.4	N/A
Concession land rights	141.2		(20.9		)	120.3		1.0	%
Rail and other track material	1,617.8		(341.1		)	1,276.7		1.8-3.1%
Ties	1,425.1		(303.7		)	1,121.4		2.0-4.3%
Grading	829.6		(129.7		)	699.9		1.1	%
Bridges and tunnels	606.4		(116.5		)	489.9		1.2	%
Ballast	602.7		(155.2		)	447.5		2.6-4.8%
Other (a)	874.1		(252.8		)	621.3		2.9	%
Total road property	5,955.7		(1,299.0		)	4,656.7		2.7	%
Locomotives	1,017.4		(193.2		)	824.2		5.0	%
Freight cars	362.2		(78.9		)	283.3		3.9	%
Other equipment	56.6		(14.1		)	42.5		7.4	%
Total equipment	1,436.2		(286.2		)	1,150.0		4.8	%
Technology and other	152.8		(111.3		)	41.5		11.6	%
Construction in progress	171.4		—			171.4		N/A
Total property and equipment (including concession assets)	$	8,073.7	$	(1,717.4	)	$	6,356.3	N/A

_____________


(a)	Other includes signals, buildings and other road assets.

Concession assets, net of accumulated amortization of $483.1 million and $444.1 million, totaled $2,007.6 million and $1,951.0 million at December 31, 2014 and 2013, respectively.

The Company capitalized $0.9 million, $1.1 million, and $0.9 million of interest for the years ended December 31, 2014, 2013, and 2012, respectively.

Depreciation and amortization of property and equipment (including concession assets) totaled $258.1 million, $223.3 million and $198.8 million, for 2014, 2013, and 2012, respectively.