Persian corridor supply operations
 

U.S. ARMY IN IRAN DURING WWII LEND-LEASE PERSIAN CORRIDOR SUPPLY OPERATIONS

https://archive.org/details/28674Per...erationsMosVwr

Yes, we can see how vast the Allied Russian-Aid supply was, through high mountains and thousands of miles !
Here are some pictures of workers assembling Dodge trucks in the Truck Assembly Plant "Little Detroit" in Andimeshk in June 1944

You might take a look at this web site "Engines of the Red Army in WW2" where there are articles about the Persian Route and the Allied vehicles

https://www.o5m6.de/redarmy/persian.php

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Dodge truck on truck assembly plant

Mega projects
 

The road project reminds me of another story posted here about a 'military road' through the sweltering, unrelenting harshness of the Australia outback. A seaport on one end, desert in the middle, and a staging community at the other. The drivers, mechanics and crews could barely keep their trucks running to get to the destination.

The second is the Northwest Staging Route and Alaska Highway through western Canada and Alaska. No road? Build one! Pour the force of will into making a ground route that could handle truck convoys between airfields.