Flat Even Surface: Can drive machinery directly on to the car: Open Design: Ability to load/unload from several different positions: Wood or Steel Floors: Nail blocking and bracing to the floor for a damage-free, secure shipment: Length of Car: 60 and 89 ft. Gross Weight on Rail: Range from 250,000 to 286,000 lbs. Load Limit: Range from 147,000