Connecticut Route 166

Route 166
Route information
Maintained by ConnDOT
Length:	1.62 mi[1] (2.61 km)
Existed:	1935 – present
Major junctions
West end:	Route 153 in Westbrook
	I-95 in Old Saybrook
East end:	US 1 in Old Saybrook
Highway system
Routes in Connecticut Special Service Roads • State Roads ← Route 165 Route 167 →

Route 166 is a minor state highway in southern Connecticut running from Westbrook to Old Saybrook. The route primarily serves as a connector from I-95 to the Saybrook Manor section of Old Saybrook.

Route description

Route 166 begins at an intersection with Route 153 in eastern part of the town of Westbrook. It heads east, roughly paralleling I-95 on the north, into the town of Old Saybrook. Along the way, it passes by the Westbrook Block company just before crossing the town line. In Old Saybrook, it turns south, crossing I-95 along the "Rosario Aloisio Memorial Bridge", with an interchange at Exit 66. It continues southeast over Amtrak railroadtracks to end at an intersection with US 1 in the western part of Old Saybrook. The entire route is known as Spencer Plains Road and is classified as a minor arterial road carrying average daily volumes of 5,600 vehicles per day.^[1]

History

Route 166 was established from town roads in 1935, and has had no major changes in alignment or designation since.^[2]

Junction list

Town	Road names	Junction	Milepost
Westbrook (0.89 miles)[1]	Spencer Plains Road	Route 153	0.00
Old Saybrook (0.73 miles)		I-95	1.28
		US 1	1.62

References

Connecticut portal

1. ^ ^{a b c} Connecticut State Highway Log
2. ^ Connecticut Routes, Route 166