This project funds design services and the construction of a replacement bridge that will increase the capacity of trains and service on the Milwaukee District North (MD-N) Line. The new Bridge A318 will add a second-track siding over the North Branch Chicago River in Rondout at milepost 32.4. A second-track siding will allow for additional train movements through the Fox Lake Subdivision, which runs northwest of Rondout and includes seven stations. This is a multi-year project that works in concert with the separate projects to improve the Rondout Interlocking, the Rondout CP Tri-State track, and the Lake Forest Crossovers.