It was not added to the Interstate Highway System as an urban route in the 1950s due to a lack of funding, but, by 1961, it was being considered for addition. One proposal to gain the mileage was to shift I-10 to the Riverfront route, but eventually, in 1964, the I-420 bypass of Monroe was removed from the Interstate System and the mileage transferred to the Riverfront Expressway project.
It was not included in the Interstate Highway System as an urban route during the 1950s due to a lack of funding, but by 1961, it was being considered for addition. One proposal to gain the mileage involved shifting I-10 to the Riverfront route, though eventually, in 1964, the I-420 bypass around Monroe was removed from the Interstate System and the mileage transferred to the Riverfront Expressway project.