Driving on the already hectic Circunvalación will become more hectic today. The Consejo Nacional de Vialidad said that the multiple-lane highway is being reduced so that construction can begin on a new overpass.
Motorists have lived through other closures in the past when two other overpasses were built. The woes are expected to last for 14 months.
Restrictions will be in force 24 hours a day.
The Circunvalación is the highway that loops around south of the San José center and heads north through San Pedro. There are plans to continue the route along the north side of the city that are unrelated to the overpass work.
The new overpass will be at Paso Ancho, better known as the Guacamaya traffic circle because of the presence of the big vehicle supply and repair firm by that name. This is a $10 million job being financed by the Banco Interamericano de Desarrollo.