The Bandırma Bursa Yenişehir Osmaneli High Standard Railway was initially planned at 201 km under the tender. It has been revised to 188 km for integration with Kuş Cenneti Station in Bandırma and because of interaction with the RAMSAR protected area. To the northwest, Kuş Cenneti National Park and Lake Manyas RAMSAR area contain internationally important wetlands on migratory birds' breeding and migration routes. Environmental sensitivity therefore required shifting the route slightly outside this area. The line was planned to avoid any interaction with Ramsar boundaries, providing a solution compliant with natural heritage protection legislation without harming ecological balance.

Ground investigations between km 140+335 and km 155+279 on the Bursa Karacabey Plain identified organic soils with high settlement potential, peat layers and high groundwater levels. The route was therefore revised northward to rock units with more stable geotechnical conditions. This reduced flood risk and long term maintenance costs while improving operational safety. It also avoided dividing farmland, reduced expropriation and established a sustainable engineering solution.

The resulting 188 km line is being built with modern engineering suited to challenging geography. It includes 25 tunnels (42.85 km), 18 cut and cover structures (5.41 km), 16 viaducts (12.25 km), 30 bridges (3.44 km), eight stations, 32 tunnel/signaling technical buildings, 67 overpasses, 98 underpasses and 208 culverts. These structures will enable safe, uninterrupted high speed train operation.

The line will use high capacity signaling, electromechanical systems and modern electrification. Electrified double track will support speeds of 250 km/h and improve passenger and freight efficiency.

Beyond connecting Bursa to high speed rail, the project aims to increase industrial and export capacity. Strategic industrial areas such as TEKNOSAB and port connections will accelerate regional development.