 Cuts through aquifers within the valley posed issues of drainage and erosion, and the creation of steeper embankments caused by excavation and rail grade construction created slope instability in the valley.The natural state of the valley has been altered significantly, and with this came the need for infrastructure implementation in order to accommodate drainage and crossings during the construction phase and into the future.This included concrete box culverts that were installed on the bottom of the river valley in order to allow excess floodwaters to continue to flow uninhibited.