Regi Bonenehu et al. 2025. Investigating Supply Chain Management Implementation Challenges in Highway Infra-structure: Evidence from the Sigli–Banda Aceh Toll Road. Global Journal of Emerging Science, Engineering & Technology. 3, 2 (Nov. 2025), 49–63. DOI:https://doi.org/10.56225/gjeset.v3i2.57.