The Otávio Rocha Viaduct is an outstanding engineering work in Porto Alegre, capital of the Brazilian state of Rio Grande do Sul.

The origins of the viaduct date back to 1914, when the city's first general plan foresaw the opening of a street to connect the eastern, southern, and central zones of Porto Alegre, which until then were isolated by the so-called "morrinho".

Such decision required a downgrade on the ground, interrupting the course of the Duque de Caxias Street and forcing the creation of an elevated road to reconstitute its passage.

On both sides of Borges Avenue, wide access stairways were erected up to the level of the viaduct, supported by large arches; small commercial establishments and sanitary facilities were installed underneath them.

10,541, of September 19, 2008, the upper public space of the Otávio Rocha Viaduct was renamed Passeio das Quatro Estações (English: Four Seasons Sidewalk).