Cost overruns are a common problem in the global construction industry, which affects the development of road construction, particularly in developing countries. Moreover, many risk factors in road construction might result in project cost overruns, particularly during COVID-19. So, the research aimed to look into the new risk variables' severity when a coronavirus infection was present. The primary goal of the study is to identify the most important risk variables affecting the construction of roads in Egypt, especially during COVID-19 to lessen the likelihood and impact of those risks. The likelihood and effects of the identified risks were determined by conducting a questionnaire survey on a set of 11 risk categories made up of 162 risks. The study's findings also indicate that the excessive and illegal loads on the roads, the fluctuating value of the Egyptian pound, and the accruing interest on loans to the contractor as a result of the work interruption caused by the coronavirus are the high-risk factors that have the greatest impact on cost overruns for road projects. In addition, the cost matrix has also been used to display risk factor levels as a road map for responding quickly to high risks.