 Between Caldera and Puerto Montt, the road was upgraded to a 4 lane freeway with as speed limit, 20% faster than Chile's common maximum speed limit.The highway ends in Puerto Montt, but it divides in two different routes, one crossing the Chacao Channel that separates Chiloé from the continent and another route named Carretera Austral (Spanish for Southern Highway) that was opened in the 1980s.The southern part of Ruta 5 crosses long extensions of native woods and important cities.