Connecticut Route 40

Route 40 begins from northbound I-91 in North Haven as the Exit 10 off-ramp. The designation runs for 0.5 miles (0.80 km) along the exit ramp. The expressway then proceeds northwest and is joined by on-ramps from Bailey Road and southbound I-91. The I-91 interchange includes an overpass over the Quinnipiac River and railroad tracks. About 0.3 miles (0.48 km) past the I-91 interchange, the road crosses over another set of railroad tracks, then has an interchange with U.S. Route 5. Access to and from US 5 is via Dixwell Avenue (SR 717) or Devine Street (SR 720). The road then continues through a rock cut where it crosses over the Wilbur Cross Parkway without an interchange about 0.6 miles (0.97 km) from the US 5 junction. The road soon enters the town of Hamden, where it crosses over the Mill River and closely parallels Route 22 for the rest of its alignment. Route 40 ends at the traffic lights with northbound Whitney Avenue (Route 10). At that intersection it also, down the road, junctions up with CT Route 22, no trucks on both east and west routes.[1]

Route 40 in Hamden is also known as the Edward Armeno Memorial Highway, named after a Hamden police officer.[1]

Plans for the Mount Carmel Connector first appeared in Tri-State Transportation Commission's recommendations of 1962. This was not acted upon for several years until the Connecticut Highway Department put up the proposal again in 1967.[2] Originally the Mount Carmel Connector was to be part of the expressway relocation of Route 10 to exit 29 of I-84 in Southington. These plans were never implemented, however.[3]

The Mount Carmel Connector was opened in 1972 from I-91 to Dixwell Avenue and State Street (US 5) in North Haven. It was first given an unsigned designation of State Road 724. The expressway was extended north to Whitney Avenue (Route 10) in Hamden in 1976, at which time it was given the designation Route 40. Originally, Route 40 was planned to extend further southeast beyond I-91 to connect with I-95 in Branford.[4]

The entire route is in New Haven County.

Exit numbers on CT Route 40 will be switched from sequential to mile-based as part of a sign and structural supports replacement project that will start in August 2021.

Location	mi	km	Old exit	New exit	Destinations	Notes
North Haven	0.00– 0.58	0.00– 0.93	-	1A	I-91 north – Hartford	Left exit; I-91 Exit 10
			-	1B	Bailey Rd	Southbound exit and northbound entrance
			-	1C	I-91 south – New Haven	Partical stack interchange with left hand entrance ramp; I-91 Exit 10
	1.15	1.85	1	1D	US 5 – North Haven, New Haven	Northbound access to/from US 5 uses Divine St (SR 720). Southbound access to/from US 5 uses Dixwell Ave (SR 717); signed as Exit 1 westbound.
Hamden	1.80	2.90	-	-	Route 15 (Wilbur Cross Parkway) – Hartford, New Haven	Proposed interchange
	2.79– 3.08	4.49– 4.96	-	-	Route 10 north – Mount Carmel, Cheshire Route 10 south – Hamden, New Haven	At-grade intersection northbound with a flyunder ramp southbound; Northern terminus of CT 40
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access       Unopened

Media related to Connecticut Route 40 at Wikimedia Commons

• Connecticut State Highway Log
• New York Roads, Connecticut Route 10
• Connecticut Roads, Route 40
• CT 40 (Greater New York Roads)