A1 - Auto-estrada do Norte

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A1 - Auto-estrada do Norte is the principal motorway (freeway) in Portugal. It connects Lisbon, the capital, to Porto, the country's second-largest city, and serves other important cities like Coimbra and Leiria. A1 is operated by Brisa - Auto-estradas de Portugal, S.A.

Construction on A1 began in 1961 and was completed in 1991. It extends 301 km, comprising 26 interchanges, 7 service areas and 2 leisure rest areas (Fátima and Oiã).