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Improvement of National Road 4, Lao PDR

Client: Ministry of Public Works and Transport

The project involved the rehabilitation and improvement of 370km of National Road 4, in the province of Luanprabang and Sayaboury, including a bridge crossing the Mekong River at Theddeau. In addition 100km of rural access roads were also improved.

Roughton provided consultancy services including:

  • Design review
  • Construction supervision
  • Socio-environmental impact elements, including resettlement
  • Road safety audits
  • Project performance monitoring and evaluation
  • HIV/Aids awareness and prevention programme
  • Human trafficking awareness and prevention programme


Laos crushing plant
Culvert in the mist