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PROPERTY, PLANT AND EQUIPMENT
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment, at cost, consisted of the following:
 
Estimated Useful Lives
 
December 31,
 
 
2015
 
2014
 
(Years)
 
(Thousands of Dollars)
Land
 
-
 
 
$
140,292

 
$
120,351

Land and leasehold improvements
5
-
40
 
186,848

 
160,283

Buildings
15
-
40
 
137,269

 
134,857

Pipelines, storage and terminals
20
-
40
 
4,399,378

 
3,963,134

Rights-of-way
20
-
40
 
194,055

 
160,008

Construction in progress
 
-
 
 
151,318

 
276,763

Total
 
 
 
 
5,209,160

 
4,815,396

Less accumulated depreciation and amortization
 
 
 
 
(1,525,589
)
 
(1,354,664
)
Property, plant and equipment, net
 
 
 
 
$
3,683,571

 
$
3,460,732


Capitalized interest costs added to property, plant and equipment totaled $5.5 million, $5.7 million and $4.5 million for the years ended December 31, 2015, 2014 and 2013, respectively. Depreciation and amortization expense for property, plant and equipment totaled $192.3 million, $177.3 million and $168.8 million for the years ended December 31, 2015, 2014 and 2013, respectively, which includes depreciation expense included in “Income (loss) from discontinued operations, net of tax” on the consolidated statements of income (loss).