Open invitation to tender, deadline 06.06.2017, for the completion of the final 12% of the 8.8 km-long La Linea tunnel project and the second Calarca - Cajamarca roadway. Value of the contract is EUR68.74 million (COP224.74 million). Contact Instituto Nacional de Vías – INVÍAS, Bogotà, email pliego@invias.gov.co. Visit https://www.contratos.gov.co/consultas/detalleProceso.do?numConstancia=17-11-6593805#. Ref. SA-PRE-DO-GTL-013-2017. 22/17.