The third temporary bridge is in place at the Circunvalación washout, and the Consejo Nacional de Vialidad hopes to get the four lanes of the road using bridges by Friday.
The first two temporary bridges are in use, each carrying a single lane. The third bridge is in place, but site work still is needed to create ramps to the structure.
The progress of the work depends a lot on the weather, There were periodic heavy rains in the area again Wednesday, but the road agency said that the sections for the fourth bridge already are on site.
These are the bailey bridges that can be erected in a few days.
The road agency is called for slow speeds on the bridges and a weight limit. Officials remember what happened on the General Cañas highway at a similar washout when a huge crane tried to cross a bailey bridge. The maximum will be 40 tons, said the agency.
The washout site is between Hatillo 8 and the Pavas turnoff. The Río María Aguilar has eroded the soil below the highway.
The Circunvalación is a bypass route south of the San José city center. The situation is important because obstructions on the Circunvalación have impact on highways all over the city.