A5 motorway (Portugal)

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The A5 is a 25-kilometre-long (16 mi) motorway, located in the Lisbon metropolitan area, Portugal.^[1] It connects Lisbon with Cascais. The motorway is also known as Estoril Coast Motorway and it overlaps the Complementary Itinerary 15 (IC15).

The first section of the highway – connecting the Duarte Pacheco Viaduct in the City of Lisbon with the National Stadium in the Oeiras Municipality – was opened in 1944, becoming the first motorway in Portugal and one of the first in the world. From 1945 to the early 1980s, it was officially designated National Road 7 (N7), when it became the A5. The last section of the A5 was opened in 1991.