In the 1850s, the Great Western Railway built the first rail line along the waterfront, between High Park and the waterfront. At first, the rail line was built at ground level with level crossings and was not a physical barrier. Starting just east of Roncesvalles the rails used to rise the hill to the level of today's Springhurst Avenue to the South Parkdale railway station. A major change came with the 'Parkdale Grade Separation Project'. The rail lines along the waterfront were evened up to a level grade along the waterfront, with a large digging project from Dowling to east of Dufferin. The hill necessitated that trains travel at full throttle to climb the hill, a factor in an 1870s train collision. In 1910, the station was relocated to the foot of Roncesvalles and named Sunnyside. The rail lines were widened and elevated above the shoreline from Sunnyside station west to the Humber, taking more of the waterfront area, nearly to the shoreline. This necessitated the removal of a level crossing between Queen Street and Lakeshore Road and a bridge over the tracks was built, with subways at several road intersections.