Properties |
10. Properties The following tables list the major categories of property and equipment, as well as the weighted-average composite depreciation rate for each category:
Millions of Dollars, Except Percentages Accumulated Net Book Depreciation
As of December 31, 2009 Cost Depreciation Value Rate for 2009
Land $ 4,891 $ N/A $ 4,891 N/A
Road:
Rail and other track material [a] 11,926 4,530 7,396 3.6%
Ties 7,254 1,767 5,487 2.7%
Ballast 3,841 869 2,972 2.9%
Other [b] 12,988 2,237 10,751 2.4%
Total road 36,009 9,403 26,606 2.9%
Equipment:
Locomotives 6,156 2,470 3,686 5.0%
Freight cars 1,885 1,015 870 4.2%
Work equipment and other 168 32 136 3.6%
Total equipment 8,209 3,517 4,692 4.8%
Technology and other 477 204 273 12.5%
Construction in progress 966 - 966 N/A
Total $ 50,552 $ 13,124 $ 37,428 N/A
Millions of Dollars, Except Percentages Accumulated Net Book Depreciation
As of December 31, 2008 Cost Depreciation Value Rate for 2008
Land $ 4,861 $ N/A $ 4,861 N/A
Road:
Rail and other track material [a] 11,366 4,263 7,103 4.2%
Ties 6,827 1,626 5,201 2.7%
Ballast 3,635 789 2,846 2.9%
Other [b] 12,520 2,044 10,476 2.3%
Total road 34,348 8,722 25,626 3.1%
Equipment:
Locomotives 5,157 2,243 2,914 4.7%
Freight cars 1,985 1,033 952 4.1%
Work equipment and other 158 29 129 3.6%
Total equipment 7,300 3,305 3,995 4.5%
Technology and other 468 187 281 12.7%
Construction in progress 938 - 938 N/A
Total $ 47,915 $ 12,214 $ 35,701 N/A
[a] Includes a weighted-average composite rate for rail in high-density traffic corridors as discussed below.
[b] Other includes grading, bridges and tunnels, signals, buildings, and other road assets.
Property and Depreciation Our railroad operations are highly capital intensive, and our large base of homogeneous, network-type assets turns over on a continuous basis. Each year we develop a capital program for the replacement of assets and for the acquisition or construction of assets that enable us to enhance our operations or provide new service offerings to customers. Assets purchased or constructed throughout the year are capitalized if they meet applicable minimum units of property criteria. Properties and equipment are carried at cost and are depreciated on a straight-line basis over their estimated service lives, which are measured in years, except for rail in high-density traffic corridors (i.e., all rail lines except for those subject to abandonment, yard and switching tracks, and electronic yards), which are measured in millions of gross tons per mile of track. We use the group method of depreciation in which all items with similar characteristics, use, and expected life are grouped together in asset classes, and are depreciated using composite depreciation rates. The group method of depreciation treats each asset class as a pool of resources, not as singular items. We currently have more than 60 depreciable asset classes, and we may increase or decrease the number of |