Construction projects of 40/60 housing program, located in different parts of Addis Ababarncity, suffer from many problems. Consequently, the objective of this research is to identifyrnand examine the construction supply chain challenges and to elicit their effect on thernprogress of construction projects. A comprehensive literature review was deployed torngenerate a set of CSC concepts, benefits, and factors believed to affect construction projectrnprogress. A total of 143 questionnaires were distributed to 4 key groups of CSC participants;rnnamely owner (government), consultants, MSEs and contractors. The survey findingsrnindicate that all 4 groups agree that actors involved in the construction of 40/60 housingrnprojects have poor knowledge of Construction Supply Chain Management which is anrnindicative of poor Construction supply chain management practices within the chain. It alsornrevealed that factors such as ‘Poor integration among the stake holders’, ‘Shortage ofrnconstruction material’ and ‘capacity problems of contractors’ sequentially have the highestrnimpact on the construction supply chain of 40/60 project. The actors in the CSC need to workrntowards more aligned and structured ways of working. Specially the government should workrntowards creating strong CSC by applying a system that increase integration andrncollaboration within and between project supply chains. Continuous coordination andrnrelationship between project participants are required through project life cycle for solvingrnproblems and enhancing project progresses.rnKeywords: supply chain management, construction supply chain management, supply chain integration