Urban roads in Dogondoutchi (2200 m) and Birni N’Konni (2050 m)

Supervision of the periodic maintenance works for asphalted roads- 9th FED Road programme (283 km), including urban roads in Dogondoutchi (2200 m) and Birni N’Konni (2050 m)

Country

Niger

Name of Client

Ministère de l’Economie et des Finances

Financing sources

EDF

Duration

02/2007 - 08/2010

Project Description

Works concern 2 lots in the central zone of Niger (283,050 km), in particular :

  • Lot 5 RN1 E: Dogondoutchi –Birni N’Konni 144,164 km (urban roads in Dogondoutchi (2200 m) and Birni N’Konni (2050 m))

+ extension of Lot 5 to Lot 2 0,511 km

RN 28 Birni N’Konni–Nigeria border 6,750 km

Road paving is in bad conditions due to the high-level of traffic. A systematic recycling with supply of natural gravel as reinforcement is included. In order to assure road drainage, some geometrical review has been carried out. Principal works : Embankment to widen the roadway: 7.403 m3 Borrow pit: 24.377 m3 Paving recycling : 1.260.000 m2    Earthworks in rippable soil: 29.900 m3  Paving recycling: 1.428.730  m2 Road base in lateritic gravel: 173.233 m3 Sub-grade in natural gravel: 3.783 m3 Bitumen for coating: 2.926 t Aggregates for surface coating: 30.600 m3 C25/30 concrete for structural works: 1.288 m3 Steel for reinforcement : 141 t

  • Lot 2 RN1 E: Birni N’Konni –Tsernaoua-Tahoua 129,975 km

+ Crossing of Tsernaoua (0,925+0,725) 1,650 km

Services Description

Supervision of the periodic maintenance works.