This article is part of a daily series of MegaProjects articles. If you want to know more about PPP projects with a considerable size visit our MegaProjects section. You can receive them by email on a daily basis.

The Ministry of Transport of Colombia and the national infrastructure agency, ANI, are tendering two highway concessions with a total length of 298km as part of 'Autopistas de la Prosperidad' package.

The PPP concession contracts cover studies and final designs, financing, environmental management, construction, renovation, operation and maintenance.

The concessions are the following:

Sea highway 2:  This concession includes 139Km, 27 tunnels and 51 bridges. It includes the following road stretches: Cañasgordas - Uramita; Variante Fuemia; Túnel de Fuemia; Debeiba - Mutatá and Mutatá - El Tigre.

Tender documents can be found at:  https://www.contratos.gov.co/consultas/detalleProceso.do?numConstancia=13-19-2037156Deadline for submission of proposals: 25 November 2013Magalena River highway 1: This concession includes 159Km, 6 tunnels and 122 bridges. It includes the following road stretches: Pradera - Porcesito; Porcesito - Cisneros; Cisneros - San José del Nus; Túnel de la Quiebra; San José Del Nus - Alto de Dolores; and Hatillo - Don Matías.Tender documents can be found at:  https://www.contratos.gov.co/consultas/detalleProceso.do?numConstancia=13-19-2037128Deadline for submission of proposals: 25 November 2013The first step in bidding is to submit an expression of interest. Ten prequalified bidders will be invited to the second stage.