Viaduto

 Nota: "viadutos" redireciona para este artigo. Para o município, veja Viadutos (Rio Grande do Sul). Para outros significados, veja Viaduto (desambiguação).
O histórico Viaduto do Chá, em São Paulo, em São Paulo. Liga os dois pontos mais altos do Centro Histórico da cidade, passando sobre o Vale do Anhangabaú e a via expressa Corredor Norte-Sul.

Um viaduto (do inglês viaduct)[1] é uma passagem construída sobre uma via de comunicação (rua, estrada ou linha de comboio).[2] É um tipo de ponte que visa a não interromper o fluxo rodoviário ou ferroviário, mantendo a continuidade da via de comunicação quando esta a se deparar com e tem que transpor um obstáculo natural constituído por depressão do terreno (estradas, ruas, acidentes geográficos como abismos etc.), cruzamentos e outros, sem que este obstáculo seja obstruído.

Viaduto ferroviário Berliner Stadtbahn em Berlim, na Alemanha

Viadutos são muito comuns em grandes metrópoles, onde o normalmente intenso tráfego de veículos de grandes avenidas ou vias expressas não pode ser interrompido. Além de em cidades que possuem muitos acidentes geográficos, onde o viaduto serve para ligar dois pontos mais altos de uma determinada região.

No Brasil

No Brasil, viadutos são muito comuns nas médias e grandes cidades, sendo que muitas vezes podem existir complexos viários formados pela união ou conjunto de diversas pontes e viadutos. Exemplos famosos são: o Complexo Viário Heróis de 1932, popularmente conhecido como Cebolão, o qual dá início às vias expressas marginais dos rios Tietê e Pinheiros, ligando estas à Rodovia Castelo Branco, na região noroeste da cidade de São Paulo. Na mesma cidade, o Complexo Viário Prefeito Olavo Egydio Setubal, também na Marginal do Rio Tietê. Além de diversos outros complexos rodoviários desse tipo.

Viadutos pelo Brasil

Ver também

O Commons possui uma categoria com imagens e outros ficheiros sobre Viaduto

Referências

  1. ↑ FERREIRA, A. B. H. Novo dicionário da língua portuguesa. 2ª edição. Rio de Janeiro. Nova Fronteira. 1986. p. 1 772.
  2. ↑ «Infopedia». Visitado: Fev. 2014 

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