Mai Bagari-Tanout road (98 km)

Supervision and control of rehabilitation works of the Zinder-Tanout road, Lot 2 : Mai Bagari-Tanout (98 km)

Country

Niger

Name of Client

Ministère des Finances, Ordonnateur National du FED

Financing sources

FED

Association

Art & Genie, Niger (membre)

Duration

01/2019 - 08/2022

Project Description

The project concerns the rehabilitation of the road between the exit of Zinder and Tanout for a length of 138 km.

The section of RN11 relating to Lot n°1 starts in front of the Mai Bagari village, approximately 1 km after the spur for the Soraz refinery. The end of the section is located at the exist of Tanout after 98 km. RN11 links Tanout with Aderbissinat, Agadez and the Algerian border.

 

The specific objective of the project is the rehabilitation of the road, to contribute to improve the economic, social and security conditions of the populations of Northern Niger. It is also a question of ensuring that the works are executed according to the technical specifications of the works contract, according to the rules of the art, within the time and budget envisaged.

 

The construction of RN11 road goes back to the year 1987. Its geometrical characteristics are 2 paved roads of 3.00 m coated in double surface treatment and 2 shoulders of 1 m on both sides in single surface treatment for a total width of 8 m platform.

The pavement consists in a 15 cm thick subgrade surmounted by a base course 15 cm thick, full width. The coating, very degraded, is almost non-existent on long parts of the road.

In general, the road is quite degraded and is subject to significant silting phenomena. We must point out the problems of construction joints in certain culverts that require special treatment.

 

Road project geometry:

  • Total road length: 98 km
  • Carriageway width: 10 m
  • Shoulders width: 5 m

Road quantities:

  • Earthworks (fill/cut): 70 000m3
  • Laterite Sub-base: 94 000 m3
  • Base course in laterite: 191 000 m3
  • Surface treatment (double surface treatment and single surface treatment on shoulders): 980 000 m2

Culverts:

N. length (m)
New 54 730
Substituted 9 112
Extended 7 58

Services Description

Control and supervision of works. Monthly reports ; Intermediate activities reports at 6 months ; Final activity report ; Works provisional reception ; Provisional final report ; Works final reception ; Closing final report ; Special reports