Map of central Connecticut with Berlin Turnpike highlighted in red
|Maintained by ConnDOT|
|Length:||12.17 mi (19.59 km)|
|Existed:||1909 – present|
|US 5 / Route 15 from Berlin to Wethersfield|
|South end:||US 5 / Route 15 in Meriden|
|Route 9 in Berlin|
|North end:||US 5 / Route 15 in Wethersfield|
|Counties:||New Haven, Hartford|
The Berlin Turnpike is a 4-lane/6-lane divided arterial road carrying U.S. Route 5 and Route 15 through the towns of Meriden, Berlin, Newington, and Wethersfield, Connecticut, United States. The road begins south of the Meriden-Berlin town line. The official length of the Berlin Turnpike is 12.17 miles (19.58 km) but the northernmost 1.07 miles (1.72 km) does not carry US 5 or Route 15. The northernmost section runs partly along Route 314 for 0.69 miles (1.11 km), and then on State Road 543 for 0.38 miles (0.61 km) to the Hartford–Wethersfield town line, where it continues as a local road known as Maple Avenue.
The main office of the Connecticut Department of Transportation (ConnDOT) is located on the Berlin Turnpike in Newington on land originally purchased for Interstate 291, which was subsequently cancelled.
The Berlin Turnpike is a popular road for shopping in the greater Hartford area; many national and regional retail chains, including Target, Stew Leonard's, Best Buy and Sam's Club have outlets on the turnpike.
In 2011, a 525 page book entitled, "The Berlin Turnpike: A True Story of Human Trafficking in America," was written by author, Raymond Bechard. The book explains a federal trial that took place in Hartford, Connecticut during which it was revealed that two young women were "sold" from one man to another in a motel on the Berlin Turnpike. According to the book, there were over 1000 motel rooms on the Berlin Turnpike as of 2011. 
The Hartford and New Haven Turnpike was chartered in 1798.
The turnpike was built along the principle of a straight line and connected the courthouses of New Haven and Hartford in as straight a route as the terrain allowed. Its southern end was at Grove Street, which forms the northern boundary of the original nine squares of New Haven. Because of the straight line principle, several intermediate town centers are bypassed by the turnpike.
The roads used by the turnpike still exist today but the route is no longer a main road in the New Haven area. In the Hartford area, the turnpike road has been substantially widened and straightened out as the Berlin Turnpike, a major commercial thoroughfare.
|New Haven||Meriden||0.00||0.00||US 5 south / Route 15 south to I-91 south – Wallingford, New Haven, NY City||Southern terminus of US 5/CT 15 overlap. US 5 becomes North Broad Street and CT 15 becomes the Wilbur Cross Parkway|
|Hartford||Berlin||4.69||7.55||Route 9 / Route 372 – East Berlin, Middletown, New Britain||Full interchange|
|5.05||8.13||Worthington Ridge Road (SR 572)|
|5.87||9.45||Route 160 east – Rocky Hill|
|Newington||7.37||11.86||Route 173 north – West Hartford|
|7.99||12.86||Route 176 north – Newington|
|9.38||15.10||Route 287 west – Newington||Western terminus of CT 287 overlap|
|9.45||15.21||Route 287 east – Wethersfield||Eastern terminus of CT 287 overlap|
|Newington–Wethersfield line||10.08||16.22||Route 175 – Newington, New Britain, Wethersfield||Grade separated interchange|
|Wethersfield||11.10||17.86||US 5 / Route 15 north – East Hartford||Western terminus of CT 314|
|11.79||18.97||Route 314 east||Southern terminus of unsigned SR 543|
|Wethersfield–Hartford line||12.17||19.59||Maple Ave (local) Hartford||Northern terminus of Berlin Turnpike and SR 543 at Hartford city line. Road becomes Maple Avenue.|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
For many years, "Hot Rodders" of all types have converged on the Turnpike to "Run what you Brung", and have proved to be the bane of the local law enforcement's existence. There have been numerous articles in local news outlets about the spate of illegal street racing over the years that have detailed what has been transpiring on the Turnpike, and the various steps the local law enforcement was taking to curtail the issue. However, the long, straight roadway, which in some places has no access roads, has proven irresistible to some street racers.
- Hartford Courant, Opening State's Best Road Today, October 22, 1909
- Droney, Christopher (9 June 2008). "Federal Judge". Court Testimony of United States vs. Dennis Paris.
- William Phipps Blake (1888). History of the Town of Hamden, Connecticut. pp. 93–94.
- "Police try to keep Drivers in Line"- Sportbike.net
- "Police have Eyes on the Road"