“Comparison of Cost and Construction Time for Drainage Projects Using a 150×150 Cm Box Culvert and a Slab Culvert on Simpang Lebong Highway, Curup Subdistrict, Rejang Lebong Regency”. 2026. Journal of Engineering and Applied Technology 2 (1): 413-24. https://doi.org/10.65310/gk75vg78.