Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment (Tables)

v3.24.3
Property, Plant and Equipment (Tables)
 12 Months Ended
Sep. 30, 2024
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
The estimated useful lives of property, plant and equipment categories are as follows:
Category Estimated Useful Life
Land and improvements
Land, unlimited; improvements, 15-25 years
Mineral reserves Based on depletion
Buildings
5 - 39 years
Plants
3 - 20 years
Construction equipment
3 - 10 years
Furniture and fixtures
5 - 10 years
Leasehold improvements
The shorter of 15 years or the remaining lease term
Property, plant and equipment at September 30, 2024 and 2023 consisted of the following (in thousands):
September 30,
2024 2023
Construction equipment $ 570,044  $ 447,467 
Plants 255,214  208,708 
Land and improvements 94,182  76,396 
Mineral reserves 69,334  69,405 
Buildings 39,838  36,885 
Furniture and fixtures 8,616  7,538 
Leasehold improvements 1,268  1,268 
Total property, plant and equipment, gross 1,038,496  847,667 
Accumulated depreciation, depletion and amortization (426,842) (358,462)
Construction in progress 18,270  15,890 
Total property, plant and equipment, net $ 629,924  $ 505,095