UNDP HIGHWAY PROGRAM SERVES AFRICA'S SAHEL REGION

A 3200 kilometer network of feeder roads extending through eight African nations is being constructed to combat the effects of periodic droughts and resulting famines. Dirt roads that have been impassable to traffic for two or three months in the year, and that have served much of the Sahel in the past, are now being improved to basic gravel all-weather roads that can be used all year round. Although the alignments of the existing roads are not always geometrical or economical, new locations cannot be chosen without taking into account the possible effect on villages and settlements that from the air, photo interpretation techniques were used to locate new sources of gravel and aggregates that could be used in road construction. One of the main problems encountered is that of water. During the dry season, dry compaction has proved successful. Also, wells have been drilled along rights of way to obtain water. Dams have been constructed to trap water during the rainy season so that it could be used after the rains.

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Filing Info

  • Accession Number: 00188489
  • Record Type: Publication
  • Source Agency: World Highways
  • Files: TRIS
  • Created Date: Apr 12 1979 12:00AM