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The upcoming completion of Metro Line 3 will significantly transform urban mobility in West Panama, demanding efficient complementary infrastructures to manage the growing flow of passengers. Given the insufficiency of current stops and the high costs of traditional construction, there arises the need for innovative solutions. In this context, the objective of this research is to economically evaluate paid zones built with recycled materials in strategic areas such as Vista Alegre. The methodology applied was quantitative and descriptive in nature, based on the analysis of population data from the National Institute of Statistics and Census (INEC) and mobility statistics from MiBus to determine the required daily capacity. Additionally, structural sizing was carried out using sustainable materials such as EPS plastic, Tetrapak panels, and concrete. The results demonstrate that the implementation of these recycled materials allows for a drastic 78% reduction in direct execution costs compared to conventional structures. For a model station of 1,296 m², the total direct cost was calculated at B/. 172,605.04, strictly considering materials and labor. It is concluded that the proposal is technically and economically feasible, representing an alternative that optimizes public investment, promotes environmental sustainability, and circular economy, and guarantees a safe approach for users.
