Abstract
The Tlogomas Bridge began construction in 2021 and has been operational since 2022. This bridge connects two areas in Malang City, namely Tunggulwulung and Tlogomas. The bridge uses concrete construction type with PCI girders, installed using launcher method. The Author proposes an alternative design for the bridge using a Pratt Truss steel framw, taking reference from the Besuk Kobo’an Bridge, which also uses Pratt Truss steel structure. The bridge design is based on the Load and Resistance Factor Design (LRFD) method. In planning this bridge, the analysis was conducted using STAAD Pro V8i software dan refers to SNI 1725:2016 for calculating loads on the bridge, as well as SNI 1729:2020 for the design of connections between girders. The superstructure planning of the Tlogomas Bridge includes the design of the deck slab, longitudinal girders, transverse girders, main girders, wind bracing, connections, and pot bearings. Based on the analysis results, the specifications are as follows, deck slab main reinforcement D16-200 and distribution reinforcement D12-100, longitudinal girders WF 500 × 200 × 10 × 14, transverse girders WF 900 × 300 × 16 × 28, main girders and edge longitudinals girders box section 1500 x 800 x 50, upper transverse girders H-BEAM 250 x 250 x 9 x 14, vertical members HWF 700 × 900 × 30 × 35, diagonal members HWF 700 × 900 × 30 × 35, upper wind bracing Pipe Ø216 × 13, lower wind bracing 2L 150 x 150 x 15, pot bearings fixed pot bearing 67 x 360 mm and multi-directional pot bearing 143 x 880 mm.