Perencanaan Ulang Struktur Atas Jembatan Menggunakan Aplikasi Midas. Studi Kasus: (Jembatan Sungai Bengkalis-Jalan Bengkalis)

Bridge structures are vital infrastructure that support the connectivity and mobility of communities. This study was conducted as a redesign of the superstructure of the Bengkalis River Bridge, which experienced a decrease in service capacity due to damage to its column elements. The redesign utilizes reinforced concrete T-girders and structural modeling using Midas Civil software. The research methodology includes field surveys, structural dimension analysis, load calculations (dead load, live load, wind load), as well as structural analysis and redesign. The calculation results show that the bridge structure, with a span length of 14 meters, girder height of 1 meter, spacing between girders of 1.2 meters, and a deck slab thickness of 200 mm, meets safety criteria based on load combinations according to SNI 1725:2016. The ultimate moment due to load combination Strength I reaches 50.37 kNm. The slab reinforcement uses D14 flexural bars with 1282,16 mm² an area that satisfies flexural strength requirements. The modeling results in Midas Civil indicate that the structure is capable of efficiently and safely withstanding the applied loads.