Overview: The state of Connecticut is leading an ongoing program to replace aging power system components, catenary, and smaller bridges on the New Haven Line. Separate from the state’s major movable water-crossing bridges, this program’s work addresses state-of-good- repair issues on the many bridges that carry the New Haven Line over roads and other crossings below the railroad. The program’s catenary replacement is installing a constant-tension catenary system that prevents overhead electrical wires from sagging or tightening during changes in temperature, a major contributor to reliability problems. Finally, work on the line’s power system will replace all historic, oil-filled circuit breakers at Connecticut’s substations with a state-of-the-art system. ConnDOT’s five-year capital plan currently has $375 million in state funding dedicated to these efforts, though a significant funding gap remains.