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Property, Plant and Equpment (Tables)
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment  
Property, plant and equipment

TDS’ Property, plant and equipment in service and under construction, and related accumulated depreciation and amortization, as of December 31, 2015 and 2014 were as follows:

 

Useful Lives

 

 

 

 

 

 

December 31,

(Years)

 

2015

 

2014

(Dollars in thousands)

 

 

 

 

 

 

 

Land

N/A

 

$

54,567 

 

$

52,946 

Buildings

5-40

 

 

506,486 

 

 

480,028 

Leasehold and land improvements

1-30

 

 

1,137,414 

 

 

1,130,468 

Cable and wire

15-35

 

 

1,688,606 

 

 

1,628,782 

Network and switching equipment

5-13

 

 

2,278,425 

 

 

2,239,176 

Cell site equipment

7-25

 

 

3,382,743 

 

 

3,284,993 

Office furniture and equipment

3-10

 

 

586,975 

 

 

634,853 

Other operating assets and equipment

3-12

 

 

205,132 

 

 

204,625 

System development

1-7

 

 

1,459,437 

 

 

1,319,930 

Work in process

N/A

 

 

220,276 

 

 

218,243 

 

 

 

 

11,520,061 

 

 

11,194,044 

Accumulated depreciation and amortization

 

 

 

(7,755,584)

 

 

(7,347,919)

 

 

 

$

3,764,477 

 

$

3,846,125