Casas Gragea, Angel Maria and Orbes Revelo, Belky, "Border Integration and Land Transport of Merchandise between Colombia and Ecuador", p. 56, http://www19.iadb.org/intal/intalcdi/integracion_comercio/i_INTAL_IYT_38_2014_CasasGragea_Revelo.pdf, accessed 1 June 2017 The bridge is located in the Andes at an elevation of 2763 meters .