Pembangunan Jembatan Rangka Baja 140 m Tipe Pratt Sebagai Penghubung Daerah Lumajang dan Malang Yang Putus Akibat Letusan Gunung Semeru = Construction of a 140 m Steel Frame Bridge Type Pratt as a Link Between the Lumajang and Malang Areas That Were Broken Due to the Eruption of Mount Semeru