The article is quite clear that there are multiple super loads, not multiple normal loads making up one big "super" load. From the 2nd paragraph for example: >

The article is quite clear that there are multiple super loads, not multiple normal loads making up one big "super" load. From the 2nd paragraph for example: > "around 20 super loads are being ferried across Ohio's roads by the Ohio Department of Transportation after arriving at a port of the Ohio River via barge. Four of these loads, including the one hitting the road now, weigh around 900,000 pounds — that's 400 metric tons, or 76 elephants" So not all eighteen are quite so huge, but the biggest four are roughly 10x heavier than a typical large lorry(/truck) can handle.