For estimating purposes, 1 yard of gravel weighs approximately 2,800 pounds. So, a 1/2 yard of gravel weighs = 2,800 / 2 = 1,400 pounds. If the gravel is very dry, a 1/2 yard of dry gravel weighs approximately 1,200 pounds or just over 1/2 ton. Because a yard of dry gravel weighs about 2,400 pounds.