Abstract:
Civil Engineering projects have long recognized the need for controlling cost overrun in 
projects.  Several tools and techniques have been established to control construction costs, 
unfortunately all of these techniques rely on controlling line items which have already 
experienced cost escalation.   
The purpose of this research is to investigate tools and techniques for managing costs in 
highway projects in General and particularly in Rwanda. It is crucial that project managers, 
contractors, client and consultant to understand and use the project cost management tools and 
techniques in managing highway projects. It incudes to review the literature in the general areas 
of project cost management tools and techniques, to investigate the frequency of use, 
challenges that impact on the use of these tools and techniques, the level of understanding as 
well the level of need of training on the use of cost management tools and techniques for 
managing highway costs from the perspective view of the direct stakeholders in Rwanda. 
Through extensive literature review and analysis of data collected in the road construction 
industry in Rwanda, it was found that, there is high level of need for training  in using cost 
management tools and techniques because most of the accurate tools and techniques for 
managing and developing projects costs are not correctly applied or totally not used. 
This study only focuses on local contractors, consulting firms operating in Kigali as these 
represents the majority of companies that are consuming big investment in road construction 
on the entire territory of Rwanda. The study was carried out by means of questionnaires and 
the data was analyzed using statistical analysis and percentage index. From the research study, 
it was found that the order of magnitude estimates; expert judgment, analogous estimating, 
parametric and reserve analysis are techniques most frequently used in highway projects in 
Rwanda while truly, they are techniques only used when there is no much information about 
the project i.e. at the earliest stage of the project, therefore not accurate.