The landslide countermeasures were planned through the technical assistance project of the Japan International Cooperation Agency (JICA) for the Government of El Salvador.
A landslide blocked 2 of the four lanes of the Pan-American Highway bypass in the Metropolitan Area of El Salvador on 15th January 2009. After removing the soil from the carriageway, the highway had been operating with only 3.5 lanes, resulting in traffic jams. During the May-
October 2012 rainy season, the landslide was reactivated with a peak speed of about 8cm per day based on control point movement. The landslide are approximately 65m height, 140m length, 120m width, and 130 thousand m3 volume. The main portion of the sliding surface was about 10m deep from the top using pipe strain gauge detection. The landslide had clear scape and cracks on flank and foot areas, so much so that the outline of the landslide was easily recognizable.