-- say a crate measuring 36 inches on a side and weighing 175 pounds....
Air freight companies might work, but this is something truck freight companies do well. Try
ABF or
Viking truck freight. Two other large trucking companies are
Yellow Freight and
Consolidated Freightways.
You may have to get the item to the terminal. Ask their advice. They may work with local delivery companies which can pick up.
AN IMPORTANT POINT ABOUT SHIPPING HEAVY BOXES BY TRUCK!
If the package is too heavy for one man to lift it down off a truck -- say 100 pounds or more, it would be wise to pay for lift gate service. A lift gate is a tail gate that works as a hydraulic elevator. Some companies make them available at an extra charge. Some require them. If the trucking company suggests it -- pay the money. Otherwise your box could be unloaded
very roughly (dropped).
Movers can also handle large, heavy items and they don't require the item to be boxed. If getting the item into or out of a house is a major concern, a mover may be the best way to go. They can handle the whole deal.