v3.25.4
Property, Plant and Equipment
 3 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Property, plant and equipment at December 31, 2025 and September 30, 2025 consisted of the following (in thousands):
December 31, 2025September 30, 2025
(unaudited)
Construction equipment$824,974 $766,914 
Plants450,997 413,983 
Land and improvements213,639 202,120 
Mineral reserves201,440 201,440 
Buildings68,525 54,583 
Furniture and fixtures9,152 10,209 
Leasehold improvements1,431 1,431 
      Total property, plant and equipment, gross1,770,158 1,650,680 
Accumulated depreciation, depletion, and amortization(560,898)(526,370)
Construction in progress43,775 28,760 
      Total property, plant and equipment, net$1,253,035 $1,153,070 
Depreciation, depletion, and amortization expense related to property, plant and equipment for the three months ended December 31, 2025 and 2024 was $43.0 million and $30.3 million, respectively.