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209 Cove Run Rd. East Brady, PA 16028

Brady’s Bend Facility Facts and Information

Winter Car Storage Pittsburgh Brady’s Bend Corporation, an active limestone mine in Armstrong County, Pennsylvania (near Butler), was acquired by J. Howard Bruce, in January of 1961 from U.S. Steel. The firm’s management has extensive development experience in subsurface limestone facilities in Pennsylvania, as well as extensive mining, real estate development and property management expertise.

The property was acquired solely with the objective of limestone mining. In the mid 1970’s BBC began to store boats, cars, and RV’s in unconditioned previously mined-out areas. In 2003, a major renovation and conversion of the existing facilities and physical development of available undeveloped space began.

Brady’s Bend Corporation offers a total of 50 million square feet of underground space. Currently developed buildings total 1,000,000 square feet accommodating storage for all types of material, warehouse storage, classified documents and records, media and data, private warehouses, classified offices and vault secured material. Over 1,000,000 square feet of general purpose space is used for the seasonal storage of recreational vehicles.

Underground Winter Car StorageBrady’s Bend’s physical structure consists of huge limestone pillars up to 30 feet thick which support a solid rock ceiling. Concrete floors are installed over the solid limestone base. Concrete block walls and the stone ceiling are painted white for optimal illumination. Electricity, lighting, plumbing, offices and specialized climate control systems are installed to meet each tenant’s material storage requirements.

The steady state climate in the unconditioned part of the facility remains a constant, natural ambient temperature of 55 degrees, thus lowering electrical and heating costs within the climatized spaces. The subsurface is also vibration free and ideally suited for high tech firms.

There are many economic advantages for tenants utilizing subsurface buildings. Construction time is shortened and can be performed year-round because the winter climate has no effect on the underground. Construction time for building a tenant space is typically between 120 to 150 days. The costs of operations have proven to be much lower in underground buildings. Utility costs are 50% or less than surface buildings. Real estate taxes are significantly less. Temperature control is easily and affordably accomplished, thereby resulting in increased worker productivity. There are virtually no exterior maintenance expenses.

Facility Facts:

What was mined?
Limestone, from the turn of the century until present
What was it used for?
Cement/Road Substrates/Agriculture/Power Plants
When was this created?
The early 1900’s
By who?
Andrew Carnegie/US Steel
Necessary for Steel production
How deep underground is the mine?
Between 200’-450’
How thick is the rock?
The Vanport limestone layer is typically 16’ thick in this area. The limestone was mined leaving approximately 4’ of limestone on the ceiling and varying amounts on the floor. Our buildings have a typical height of 11’.
How is the roof supported?
The roof is supported by pillars of limestone left during mining.
How big are the pillars?
Approximately 30’ thick and run the length of rooms
How big is the facility?
  • Over 2500 acres on the surface
  • Over 6 miles from end to end
  • Over 625 miles of road
  • 50 million sq. ft. subsurface
  • 1,000,000 sq. ft. used for recreational vehicle storage
  • 100,000 sq. ft. developed into buildings and roadways
  • 500,000 sq. ft. of climate controlled vehicle warehouse
How long does it take to build space?
90 to 150 days but construction can be completed through-out the entire year.
How do you measure space?
Square footage is measured by useable floor space excluding the pillars.
What about dampness?
All of the buildings are equipped with dehumidification units that keep the relative humidity constant at 50% inside the buildings.
What about the temperature?
The mine remains at a constant temperature of 52 degree year round and storage rooms remain at approximately 62 degrees constant.
Has there ever been a cave in?
The majority of roof failures occur during the mining process or relatively soon thereafter. Usually they are caused due to excessive blasting. Since mining activity ended over 90 years ago in these areas we have had a long period of time to evaluate this subsurface as stable. We also do regular measurements to record significant changes in the structure of the subsurface. The pillars over time go through a self-scaling process where smaller loose rocks do fall. Our facility is inspected on a quarterly basis by the PA DEP Bureau of Deep Mine and MSHA.
What about not seeing the sun?
It is not unlike working in a warehouse or office. Not everyone has a window. But there are advantages: our cars never gets melting hot in the summer or cold in the winter. We never have to go out in the rain. During the summer we go outside at lunch like everyone else.


Interesting facts:

  • Since 2003 there has been over 3 million dollars invested in facility improvements including new entrances, docks, storage rooms, offices, water and sewage, backup generation, computer/phone systems and a fiber/electrical backbone.
  • The mine has been in constant production for 100 years and has been owned by the Bruce Family for over 50 years.
Underground Storage for Cars and Boats
Underground Seasonal Storage for Boats and RVs
Underground Seasonal Storage for Campers and Boats