WHAT IS SUBTROPOLIS?
SubTropolis was created through the mining of a 270-million-year-old limestone deposit. In the mining process, limestone is removed by the room and pillar method, leaving 25-foot square pillars that are on 65-foot centers and 40 feet apart.
The pillars’ even spacing, concrete flooring and 16-foot high, smooth ceilings make build-to-suit facilities time and cost efficient for tenants. A tenant requiring 10,000 to one million square feet can be in their space within 150 days. SubTropolis is completely dry, brightly lit, with miles of wide, paved streets accessed at street level.
Hunt Midwest SubTropolis sets the standard for subsurface business developments.
SUBTROPOLIS FACTS
- nearly 5,000,000 s.f. of leasable space
- 6.65 miles of lighted, wide, paved roads
- 2.1 miles of railroad track
- 394 truck dock locations served by more than 300 truck lines
- 16' ceiling height
- more than 50 tenants
- more than 1,500 employees
- more than 1,800 parking spaces
- over 10,000 stone pillars
- protected by fire sprinklers
- strength of limestone is 10,000 to 12,000 pounds per square inch, which is 3x stronger than concrete
- 1.5 million tons of rock are mined every year (35 acres per year)
- nearly 45 million square feet (over 1,000 acres) have been mined out since mining began in 1945
