Rural roads in that period would have been mostly be dirt, gravel, or possibly asphalt. The concrete highway building boom started in the 1950s with the Interstate Highway program, during Eisenhower's administration. Prior to that, a few county roads, (in relatively prosperous counties) might have been asphalt, but most were gravel, or dirt. Lower trafic, local roads, dirt.
In the late 1930s and early 1940s the U.S. was still reeling from the great depression, and then involved world war two. There wouldn't be any government money left over for much in the way of road building, or maintainance. There were exceptions for roads that were deemed essential for military use. The "alcan highway" that connected the "lower 48 states", through Canada, to Alaska, is one example. In fact, the ostensible motive for building the interstate highway system was to aid military transport in the event of war. In the world war one era, a young army officer named Dwight Eisenhower, was assigned to lead an army truck convoy across part of the US. It was a nightmare journey due to the deplorable state of the highways of that time. Years later, as president, he pushed the interstate Highway act.
Traction Fan :smilie_daumenpos:
A main, county "highway" on my layout. (Wow, asphalt! My layout is set near Seattle. Would you like to drive on an UNpaved road/swamp in the "Rain capital of the USA?")
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