Rodovia dos Imigrantes (official designation SP-160) is a highway in the state of São Paulo, Brazil. The highway connects the city of São Paulo to the Atlantic coast and with the seaside cities of São Vicente and Praia Grande. It follows the route of Rodovia Anchieta and is also one of Brazil's busiest highways, particularly on weekends. It has 44 viaducts, 7 bridges and 11 tunnels, along its 58.5 km stretch. The highway has recently been expanded, in one of the most audacious feats of Brazilian highway engineering, with extremely long tunnels and high strutting six-lane bridges, seemingly floating over the tropical rain forest which covers the steep faces of the Serra do Mar, the 800 m high cliff range which separates the São Paulo plateau from the seaside lowlands.