Heavy rains sometimes wash roadways downhill. That happens frequently in Costa Rica.
One example is on Ruta 239, the road from San José to Puriscal at the Alto de Quitirrisí. Here the highway lane closest to a steep grade into the valley gave way, and highway engineers had to figure out a way to repair it.
The solution has been a 400-meter retaining wall with the new highway lane fastened to the rest of the road with steel anchors. There are several layers of steel-reinforced concrete.
The distance is a bit more than 1,300 feet.
The job is costing 800 million colons or about $1.6 million.
The Consejo Nacional de Vialidad said the work is being done in the daylight and noted that the highway was the only route between Puriscal and the Central Valley and was frequented by tourists.