Development and asphalting study of the Mbaiki-Boda-Yaloke road section (226.800 Km)

Development and asphalting study of the Mbaiki-Boda-Yaloke road section (226.800 Km)

Paese

Central African Republic

Cliente

Commission of CEMAC in Central African Republic

Finanziatore

Fonds de Développement de la Communauté (FODEC)

Associazione

SCETI

Periodo

04/2022 - 05/2023

Descrizione Progetto

The Mbaïki-Boda-Yaloké earth road, 226 km long, is part of the strengthening of roads related to development corridors and opening up to the outside. The Boda-Mbaïki section of the road is a link of the Trans-African road TH3, Mombassa – Lagos and the Mbaïki – Bangui section is a link of the opening up corridor 13, Brazzaville – Ouesso – Bangui – Ndjamena. The axis makes it possible to evacuate production to the port of Douala

 

Longitudinal profile :

  • Absolute minimum salient radius: 4500 m
  • Absolute minimum re-entrant radius: 2200 m
  • Maximum gradient (slopes and ramps): 6 %, except special conditions

 

Cross section :

In current section, the platform will be eleven (11) meters long and will consist of :

  • A 1x2 lane carriageway 3.5 meters wide ;
  • Two shoulders each consisting of a width of 2 m.

Crossing a built-up area, the platform will be increased to 16 meters and will consist of :

  • A 1x2 lane carriageway 3.5 meters wide ;
  • A shaved strip on the left and right sides of 2 m ;
  • Two sidewalks each 2.5 meters wide including sanitation.

 

Sizing of structures and drainage:

  • 5 years for ditches and gutters,
  • 10 years for transverse sanitation works (nozzles and small culverts),
  • 50 years or 100 years for structures (large culverts on waterways and bridges).

Descrizione Servizi

The services, provided in the sectors of engineering, transport economics, geotechnics, topography, hydraulics, engineering structures, the environment, lead to the achievement of:

  • complete APS files (traffic, economic, environmental, technical study);
  • complete preliminary design files (detailed technical, topographical, geotechnical, hydraulic, engineering structures);
  • complete tender dossier.