In 1950 the metal bridge over the Corgo river had some work done .
Alternatively the race went through the bridge and Bairro de Santa Margarida , who received a compacted sand floor for that purpose .
In 1950 the metal bridge over the Corgo river had some work done , but alternatively the race went through the bridge and Bairro de Santa Margarida , who received a compacted sand floor for that purpose .