Massachusetts Route 189

Route 189
Map of northern Connecticut with CT 189 highlighted in solid red and of southern Massachusetts with MA 189 highlighted in dotted red
Route information
Length:	22.43 mi (36.10 km) Connecticut: 20.32 mi Massachusetts: 2.11 mi
Existed:	1932 (extended 1963) – present
Major junctions
South end:	US 44 in Hartford
	Route 187 in Bloomfield
North end:	Route 57 in Granville, MA
Location
Counties:	CT: Hartford, MA: Hampden
Highway system
Routes in Connecticut Interstate U.S. State SSR SR ← Route 188 Route 190 → ← Route 187 MA I‑190 →

Route 189 is a state route in the U.S. states of Connecticut and Massachusetts. The route begins in the northwestern portion of the Connecticut state capital of Hartford and ends in the rural town of Granville. In Massachusetts, the route is not a state highway and is maintained by the town of Granville.

Route 189 begins at an intersection with US 44 in western Hartford and heads northwest, crossing into West Hartford. It passes the University of Hartford and the eastern end of Route 185, continuing northwest across the northeastern corner of West Hartford and crossing into Bloomfield. In Bloomfield, it continues north, crossing Route 218, and passes through the center of town where it intersects Route 178. North of town, it turns slightly northeast, and meets Route 187 to form a short freeway. After Route 187 leaves to the north, the freeway continues briefly, then downgrades to a 2 lane primary arterial road as it crosses into Simsbury. In Simsbury, it enters the Tariffville section of town, where it meets the eastern end of Route 315 before crossing the Farmington River into East Granby. In East Granby, it continues northwest to Granby. In Granby, it continues northwest, briefly overlapping US 202 and Route 10, immediately followed by a brief overlap with Route 20. It then continues northwest across the northwest portion of town, and crosses the Massachusetts state line into the town of Granville, ending at an intersection with Route 57 in the town center.