Back in 1949 a study was completed that analyzed the best routes for expressways in the city. Many of the plans went ahead to be completed 15 and 20 years later while some were changed immensely. During the time period from these early plans to the time of final construction many things changed in the city. The post war building boom opened up many new tracts of the city which led to a radical shift in population. The late 1950s brought the death of the North Shore railroad line.
The following sketch shows a plan that incorporated the old North Shore railroad into the new expressway. This design gave the railroad its own right of way that got rid of the bottleneck on South 6th Street where the railroad ran previously. Unfortunately with the North Shore’s demise these plans were dropped.