Highway 91 (1930s)In 1929 California approved financing of $800,000 to pave the Los Angeles Highway (Highway 91) from San Bernardino to the Nevada state line, in order to provide easier access to Las Vegas and the Boulder Dam project.
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1. Most famous road. Linking Chicago and Los Angeles, Route 66, also known as the Main Street of America, has been immortalised in song and on screen and is certainly a candidate for the title of world's most famous road.