The Circunvalación is being reduced to a single lane east and a single lane west at the site of the August washout.
The Consejo de Vialidad said that the second of four bailey bridges is being taken down so that a permanent bridge can be built.
Traffic for the last week has been over three temporary bridges with police using the middle lane as traffic demands. The backups extended into Hatillo proper even on the weekend.
Traffic on the Circunvalación should be even worse this week as traffic from the six- to four-lane highway will be able to pass over just two single-lane bridges. Transport officials said they expect this situation to last for a week until the first permanent bridge goes into service.
The washout has cost motorists, the government and private firms millions in lost work hours, fuel costs and other expenses.
Workers at this point are installing pre-fabricated concrete beams that will be the base on the new bridges over the Río Aguilar. The location is between the most westward traffic light in Hatillo and the turnoffs to the Ruta 27 Caldera highway.