By Lisa Flueckiger, Contributing Reporter

RIO DE JANEIRO, BRAZIL – The latest piece of infrastructure in the project to replace the Perimetral highway in Rio’s Centro and Port Zone, the Rio 450 tunnel has been inaugurated on Sunday March 1st, the city’s 450th birthday. With the tunnel, traffic in Centro changes again considerably.

The 1,480 meters long tunnel connects Rua Primeiro de Março in Centro with Via Binário and the Gasômetro viaduct in the Port Zone. It normally operates in the direction from Centro to Port Zone, but reverses in the morning rush hour, in . . .

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