 Construction was not completed until around 1980, three years after the I-410 loop was cancelled.However, the portion north of the Gulf Intracoastal Waterway bridge was retained as I-510, a short spur of I-10.Around this same time, the Louisiana Department of Transportation and Development took over the northern portion of Paris Road and the entirety of Hayne Boulevard west to Morrison Road into the state highway system as an extension of LA 47.