A pad is provided for supporting heavy loads and is capable of supporting loads of 100 tons or more. The pad has a core having a bi-directional grid formed from parallel fiberglass materials, with a first set of material at right angle to a second set of fiberglass materials and which grid surrounds a closed cell material, which is infused with resin to form a core. A fiberglass top surface, bottom surface and at least one sidewall is provided. The result is a pad able to distribute very heavy loads, is resistant to bending, durable and light weight.