Here's some of our local big modular platform trailers, built by Drake - you just keep pinning as many modules together as you require - up to 24 rows of axles if you need it.
All axles are fully height adjustable over a wide height range, the modules are self-steering, and they hydraulically widen as well.
The last one is TWO platform trailers carrying a big bucket wheel stacker/reclaimer. Got to be some weight in that load!
I was reading in a crane magazine recently, where one of the big iron ore miners in the North of Western Australia ordered approximately 30,000 tonnes of steel structural work, all built in Asia, to set up a new iron ore mine.
The steel structural work was all shipped in, largely prefabricated, and the haulage operators carried out 138 individual oversize load deliveries to take the steel structural work from the Port, to the new mine site inland, around 300 to 400 kilometres.
The structures were up to 8 metres wide, and the average individual load on the above numbers was 217 tonnes! Haven't seen any photos of those haul jobs yet!