Waterbury Branch:

• Limits: Waterbury - Bridgeport
• Total length: 27 miles
• Current stations: 7
• Average daily ridership: 141 passengers AM Peak Inbound Boardings AM Peak Inbound Boardings
• Also acts as a freight line

New Canaan Branch:

• Limits: New Canaan - Stamford
• Total length: 9.9 miles
• Current stations: 5
• Average daily ridership: 2,579 passengers daily AM Peak Inbound Boardings
• Electrified line