Many people dont know that the viaducts we're meant to stand freeway or no freeway.
"Although the viaduct was meant to be a self-sufficient component of the city’s
transportation infrastructure and one that did not require freeways to function effectively, the
engineers made their belief in the necessity of freeways clear. Downtown traffic volumes were
such, they added, that freeways were essential. They conceded the viaduct could function
without freeways but maintained, “The provision of the new viaduct will not by itself
significantly improve the environment."