Corruption has been a persistent challenge in the Solomon Islands. Efforts to combat corruption are crucial for sustainable development especially when the country faces challenging factors such as geographical features, low state penetration and natural resource management. The general findings of this assessment display the high risk of corruption in thirteen selected priority projects under the Solomon Islands National Infrastructure Investment Plan (2013-2023). Factors contributing to corruption risk includes inadequate management and control of development partner-funded projects, lack of clear policies and weak institutional capacity, it is essential to recognize that corruption risks can impact any infrastructure initiative. Efforts to combat corruption and ensure transparent infrastructure development are ongoing. By strengthening governance, continuous promoting integrity, and involving citizens, the Solomon Islands can enhance the effectiveness of its infrastructure projects.