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.
The Interstate Highway System did not include it as an urban route during the 1950s due to funding issues. However, by 1961, it was being considered for addition. A proposal to add mileage involved shifting I-10 to the Riverfront route, but in 1964, the I-420 bypass around Monroe was removed from the Interstate System and its mileage was transferred to the Riverfront Expressway project.