Waterbury Branch

In 1906, work on double-tracking the branch between Seymour and Waterbury was underway.[1]

In September 2015, it was announced that out of Governor Malloy's 30 year-$100 Billion transportation plan, $350 Million has been included to improve service along the branch.[2] The upgrades include a new signal system with multiple passing sidings to increase service, newer equipment, and station rehabilitation.[3] Currently, only one train is allowed on the branch at a time. The signalization of the line will allow for multiple trains to safely be on the branch at a time, while allowing for increased capacity and safer train operation. Four passing sidings, at Devon, Derby, Beacon Falls, and Waterbury, will be built, and they are expected to be completed in 2018. Work began on a siding just north of the Derby–Shelton station and is expected to be completed in late 2015.[3] Some of the 16 grade crossings on the line will be permanently closed, while others will have gates and flashers installed to prevent accidents. The entire project is schedule to be completed in November 2020 and will cost $73 million. CTDOT also purchased locomotives from NJ Transit that, once overhauled, will be put into branch line service.[4]

The following connecting services are available to Amtrak,[5] Metro-North Railroad,[6] Shore Line East,[7] CT Transit,[8] and Greater Bridgeport Transit Authority.[9]

Zone	Location	Station	Miles (km) from GCT	Date opened	Date closed	Connections / notes
16	Stamford	Stamford	33.0 (53.1)	1849		Metro-North Railroad: New Haven Line Amtrak: Acela Express, Northeast Regional, Vermonter Metro-North Railroad: New Canaan Branch CTrail: Shore Line East (limited service) CTtransit Stamford: 311, 312, 313, 321, 322, 323, 331, 332, 333, 334, 341, 342, 343, 344, I-BUS Express, Stamford Commuter Shuttle, Bulls Head, North, Route 1 East[8] Greyhound Lines, Peter Pan Bus Lines, UConn Stamford Shuttle Limited service station
19	Bridgeport	Bridgeport	55.4 (89.2)	1840[10]		Metro-North Railroad: New Haven Line Amtrak: Northeast Regional, Vermonter CTrail: Shore Line East (limited service) Greater Bridgeport Transit: 1, 3, 4, 5, 6, 7, 8, 9, 10, 13, 15, 17, 19X, 22X, 23, Coastal Link[9] Greyhound Lines, Peter Pan Bus Lines Bridgeport & Port Jefferson Ferry Sacred Heart University Transit Shuttle, University of Bridgeport Shuttle
20	Stratford	Stratford	59.0 (95.0)			Metro-North Railroad: New Haven Line CTrail: Shore Line East (limited service) Greater Bridgeport Transit: 1, 10, 16, 23, Coastal Link[9]
51	Derby	Derby–Shelton	69.5 (111.8)	1849		Greater Bridgeport Transit: 15, 23 CTtransit New Haven: 255
	Ansonia	Ansonia	71.1 (114.4)	1849		CTtransit New Haven: 255
	Seymour	Seymour	75.0 (120.7)	1849		CTtransit New Haven: 255
	Beacon Falls	Beacon Falls	78.5 (126.3)	1849
	Naugatuck	Naugatuck	78.5 (126.3)	1849		CTtransit Waterbury: N1, N2, T74
	Waterbury	Waterbury	87.5 (140.8)	1849		CTfastrak: 925, 928

Waterbury Branch train with depowered SPV-2000 coaches at Waterbury in 2003

The Waterbury Branch uses 2008 Brookville BL20GH and GE Genesis P32AC-DM locomotives and Shoreliner passenger coaches. It has also used Mafersa coaches originally purchased for service on Shore Line East. Prior to the arrival of push-pull coaches, the branch used self-propelled Budd RDC and SPV-2000 railcars, the later of which were later converted to coaches. A typical shuttle consists of three cars.

• Naugatuck Railroad
• Connecticut Commuter Rail Council