Property, Plant and Equipment Disclosure
Asset Age Ratios (Summary)
Average Age
Estimated Total Useful Life
Estimated Age, Time Elapsed Since Purchase
Estimated Remaining Life

CSX Corp., balance sheet: property, plant and equipment

US$ in millions

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Rail and other track material	8,660)	8,761)	8,449)	8,194)	7,964)
Ties	6,763)	6,522)	6,284)	6,041)	5,860)
Grading	2,741)	2,751)	2,768)	2,763)	2,757)
Ballast	3,383)	3,289)	3,238)	3,156)	3,076)
Bridges, trestles, and culverts	2,989)	2,794)	2,688)	2,529)	2,506)
Signals and interlockers	3,299)	3,266)	3,170)	3,077)	2,975)
Buildings	1,416)	1,388)	1,366)	1,335)	1,318)
Other	5,541)	5,305)	5,146)	5,030)	4,955)
Road	34,792)	34,076)	33,109)	32,125)	31,411)
Locomotive	4,848)	4,912)	5,085)	5,320)	5,661)
Freight cars	2,316)	2,322)	2,557)	2,964)	3,093)
Work equipment and other	3,132)	2,891)	2,585)	2,424)	2,338)
Equipment	10,296)	10,125)	10,227)	10,708)	11,092)
Land	2,272)	1,885)	1,823)	1,836)	1,845)
Construction in progress	745)	419)	371)	431)	457)
Properties, cost	48,105)	46,505)	45,530)	45,100)	44,805)
Accumulated depreciation	(13,863)	(13,490)	(13,086)	(12,932)	(12,807)
Properties, net book value	34,242)	33,015)	32,444)	32,168)	31,998)

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

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Item	Description	The company
Properties, cost	Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.	CSX Corp. properties, cost increased from 2020 to 2021 and from 2021 to 2022.
Properties, net book value	Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.	CSX Corp. properties, net book value increased from 2020 to 2021 and from 2021 to 2022.

CSX Corp., asset age ratios

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Average age ratio	30.25%	30.23%	29.94%	29.89%	29.81%
Estimated total useful life (years)	31	31	32	32	32
Estimated age, time elapsed since purchase (years)	9	10	9	10	10
Estimated remaining life (years)	21	22	22	22	23

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

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Asset age ratio	Description	The company
Average age ratio	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	CSX Corp. average age ratio of depreciable property, plant and equipment deteriorated from 2020 to 2021 and from 2021 to 2022.
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	CSX Corp. estimated total useful life of depreciable property, plant and equipment decreased from 2020 to 2021 and from 2021 to 2022.
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	CSX Corp. estimated time elapsed since purchase of depreciable property, plant and equipment deteriorated from 2020 to 2021 but then improved from 2021 to 2022 exceeding 2020 level.
Estimated remaining life		CSX Corp. estimated remaining life of depreciable property, plant and equipment decreased from 2020 to 2021 and from 2021 to 2022.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in millions)
Accumulated depreciation	13,863)	13,490)	13,086)	12,932)	12,807)
Properties, cost	48,105)	46,505)	45,530)	45,100)	44,805)
Land	2,272)	1,885)	1,823)	1,836)	1,845)
Asset Age Ratio
Average age¹	30.25%	30.23%	29.94%	29.89%	29.81%

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Average age = 100 × Accumulated depreciation ÷ (Properties, cost – Land)
= 100 × 13,863 ÷ (48,105 – 2,272) = 30.25%

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Asset age ratio	Description	The company
Average age	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	CSX Corp. average age ratio of depreciable property, plant and equipment deteriorated from 2020 to 2021 and from 2021 to 2022.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in millions)
Properties, cost	48,105)	46,505)	45,530)	45,100)	44,805)
Land	2,272)	1,885)	1,823)	1,836)	1,845)
Depreciation expense	1,500)	1,420)	1,383)	1,349)	1,331)
Asset Age Ratio (Years)
Estimated total useful life¹	31	31	32	32	32

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Estimated total useful life = (Properties, cost – Land) ÷ Depreciation expense
= (48,105 – 2,272) ÷ 1,500 = 31

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Asset age ratio	Description	The company
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	CSX Corp. estimated total useful life of depreciable property, plant and equipment decreased from 2020 to 2021 and from 2021 to 2022.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in millions)
Accumulated depreciation	13,863)	13,490)	13,086)	12,932)	12,807)
Depreciation expense	1,500)	1,420)	1,383)	1,349)	1,331)
Asset Age Ratio (Years)
Time elapsed since purchase¹	9	10	9	10	10

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Time elapsed since purchase = Accumulated depreciation ÷ Depreciation expense
= 13,863 ÷ 1,500 = 9

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Asset age ratio	Description	The company
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	CSX Corp. estimated time elapsed since purchase of depreciable property, plant and equipment deteriorated from 2020 to 2021 but then improved from 2021 to 2022 exceeding 2020 level.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in millions)
Properties, net book value	34,242)	33,015)	32,444)	32,168)	31,998)
Land	2,272)	1,885)	1,823)	1,836)	1,845)
Depreciation expense	1,500)	1,420)	1,383)	1,349)	1,331)
Asset Age Ratio (Years)
Estimated remaining life¹	21	22	22	22	23

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Estimated remaining life = (Properties, net book value – Land) ÷ Depreciation expense
= (34,242 – 2,272) ÷ 1,500 = 21

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Asset age ratio	Description	The company
Estimated remaining life		CSX Corp. estimated remaining life of depreciable property, plant and equipment decreased from 2020 to 2021 and from 2021 to 2022.

CSX Corp. (NASDAQ:CSX)

Analysis of Property, Plant and Equipment

Property, Plant and Equipment Disclosure

Asset Age Ratios (Summary)

Average Age

Estimated Total Useful Life

Estimated Age, Time Elapsed since Purchase

Estimated Remaining Life