The Plan for Plymouth was, on the one hand, a template for the rapid reassembly of a destroyed city centre, but Abercrombie also took the opportunity to lay out a whole hierarchy of settlements across the city of communities, neighbourhoods and districts. Central to this was a revision of transport infrastructure that prioritised the position of the railway as a gateway to the city centre and provided in the long-term for a dual carriageway road by-pass that only finally came into being in the 1980s (forty years after being planned).