Connecticut Route 9A

Route 154
Map of Middlesex County in southern Connecticut with Route 154 highlighted in red
Route information
Maintained by ConnDOT
Length:	28.24 mi (45.45 km)
Existed:	1932 (extended 1967) – present
Major junctions
South end:	US 1 in Old Saybrook
	I-95 / Conn. Turnpike in Old Saybrook Route 9 in Old Saybrook and Essex
North end:	Route 9 in Higganum
Location
Counties:	Middlesex
Highway system
Routes in Connecticut Interstate U.S. State SSR SR ← Route 153 Route 155 → ← Route 9 9A Route 10 →

Route 154 is a state highway in Connecticut running for 28.24 miles (45.45 km). It serves as one of the main thoroughfares in the town of Old Saybrook, intersecting twice with U.S. Route 1. North of I-95, Route 154 runs parallel to Route 9, along to the west bank of the Connecticut River. The route ends in Middletown at Route 9.

Route 154 begins at US 1 in Old Saybrook. It heads south on Great Hammock Road as it is parallel to the Long Island Sound. It becomes known as Plum Bank Road, shortly before turning eastward as Indianola Drive as it enters Knollwood. Maple Avenue turns on to Route 154 as it enters Fenwick. It passes by the Fenwick Golf Course just prior to passing over the South Cove. It becomes Bridge Street for a short time before executing a sharp turn to the west as College Street, and later Main Street.

Route 154 soon turns north, passing just to the west of North Cove. It then becomes concurrent with US 1 prior to intersecting Interstate 95 as the Middlesex Turnpike. Proceeding north, it intersects Route 9 before passing near South Cove, a separate cove than the one previously crossed over, although they are both an extension of the Connecticut River. It then intersects Route 9 again, before turning slightly east of north, and intersecting it for a third time. It then becomes known as Main Street while traveling parallel to the Connecticut River. It then intersects Route 148.