Heavy rains in the Arenal area resulted in the closing of Ruta 142 between the Lake Arenal dam and Nuevo Arenal. The Consejo Nacional de Vialidad said a landslide blocked the route.
Work crews reported that they hoped to have the stretch open by Wednesday evening, but there was no confirmation that this happened.
The highway was the hardest hit of a number of roads that were landslide sites or contained places where the pavement collapsed. In the other cases, the roadway is not blocked completely and traffic is restricted to a single lane.