Susquehanna River Bridge Reconstruction, National Railroad Passenger Corporation: CST, as a design subconsultant, is providing underground and overhead utilities relocation and/or modification design services for this 6.2 mile project from Prince interlocking over a new Susquehanna River Bridge to South of Oak interlocking. The overall project is divided into two phases. Phase 1 is to construct a new modern high-level fixed structure carrying two tracks adjacent to the existing two track movable bridge. Phase 2 is to remove the existing bridge and replace it with a second new fixed structure carrying an additional two tracks. Improvements to both approaches are planned to accommodate the additional tracks.