According to Vítor Azevedo, from Civil Protection, the closure was made on Wednesday, at the end of the day, and is still being maintained.
"Water spilled over the road and the bridge was submerged," he said.
In the city of Braga, Rua Maria Amélia Bastos Leite has been closed "for a few days, as a precaution".
"It is an area where floods occur recurrently", explained Vítor Azevedo.
In the municipality, and according to the same official, there have been "some landslides on small slopes and some flooding, but without major consequences".
Eight districts in the North and Centre of mainland Portugal are under yellow warning due to rain and, in some cases, due to wind and sea turmoil, indicated the Portuguese Institute of the Sea and the Atmosphere (IPMA).
According to the IPMA, the districts of Viseu, Porto, Vila Real, Viana do Castelo, Leiria, Aveiro, Coimbra and Braga are under a yellow warning.