Trans Papua corridor highway is now an important highway, predictable way Trans Papua will experience overcapacity in the future. To overcome this situation the trans-Papua road building is planned. The investment of highway construction will always be involved in risk with certain scale, it is necessary to do the risk analysis. The purpose of this study is to identify and analyze the risk, measuring of risk probability point and risk impact and risk test by performing simulations using @Risk For Excel software. This research was conducted using a survey method and interview with respondents. The survey was conducted in three phases, namely: beginning survey, preliminary survey and detailed survey. Based on research conducted identified four risk factors are financing risk, construction risk, equipment risk and force majeure. These four risks are identified in the medium risk category. The influence level of risk impact to the increase of construction investment budget plan trans-Papua roads as a whole amounted to 8.07% (IDR. 1,183 trillion equivalent to USD 82,684 million) with risk factor for 0,549 then classified as medium risk. While detaily 15% (IDR. 2,194 trillionequivalent to USD 153,346 million) by a factor of 0.685 then risk being classified as at risk. The most sensitive risk is the risk of Construction.
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