Purpose: This study aims to analyze the impact of the Hasanudin-Petrosea road infrastructure improvement on the economic activities of surrounding communities in Mimika Regency, focusing on production, distribution, and income levels.

Research/methodology: Using a quantitative descriptive approach, primary data were gathered through field observation, structured questionnaires, and documentation. Respondents were selected using purposive sampling, and data were analyzed using descriptive statistical methods to identify changes in economic activities before and after infrastructure development.

Results: The findings indicate a significant positive impact on the local economy. Most respondents reported increased production capacity, smoother distribution processes, and higher income levels following the road improvement. Enhanced accessibility has led to growth in small businesses such as workshops, food stalls, and kiosks along the improved road segment.

Conclusions: The improvement of Hasanudin–Petrosea Road infrastructure has had a significant positive impact on the economic activities of surrounding communities. It has facilitated increased production efficiency, enhanced distribution of goods, and improved household income. The development has also supported the growth of small businesses along the road corridor. However, to sustain these benefits, ongoing infrastructure maintenance and integrated economic planning are essential to ensure long-term prosperity for local residents.

Limitations: This study is limited to one geographic location and a small respondent sample, which may not fully capture the broader regional impact. Moreover, the analysis does not account for long-term sustainability or maintenance of the infrastructure.

Contribution: The study contributes to the literature on infrastructure-led local economic development, providing empirical evidence on how improved road access can stimulate production, improve distribution efficiency, and increase community income. It also serves as a policy reference for future infrastructure planning in underdeveloped regions.