No I believe the ends are open. The question is a good one, and deserves some thought. There are a few holes in the sides, but none on the bottoms of the low spots that I am aware of. I will look again tomorrow if the weather permits. Dodge is in the business of making trucks. They pay alot of attention to frame strength, flexibility, pay load capacity, material selection, method of manufacture, rigidity, and cost per unit. While there frames do seem stout, Dodge and there German staff do nothing unless it helps their bottom line. So while everyone enjoys the commercials and articles boosting of all it's merits, the bottom line is these new frames have only replaced the old frames because they are cheaper to produce. Also while Dodge has many reasons to spend research dollars (Euros?) of bringing down unit cost, they do not have the same drive to devote to frame longevity.