This project provides for the rehabilitation of Tuscarora Tunnel and portal buildings including electrical and mechanical upgrades; full-depth replacement of approach roadways; rehabilitation of dual mainline 2- span continuous deck I-beam bridges at MP 185.9 including deck repairs, installation of membrane waterproofing and bituminous overlay, asphaltic plug expansion joints, painting, new concrete end diaphragms, and installation of a wingwall buttress system. Work in the eastbound tunnel includes removal of the existing tunnel ceiling, installation of a PVC membrane waterproofing system and shotcrete liner, replacement of walkway, roadway barriers and drainage. Work in the westbound tunnel includes installation of vertical drains in the existing liner walls and replacement of drainage system. Both tunnels receive new lighting and electronic systems.