After another 2.1 miles (3.4 km), Route 75 crosses over the Farmington River into the village of Poquonock, and then has an interchange with the Bradley Airport Connector at the Windsor-Windsor Locks town line.

Route 75, known as Ella T. Grasso Turnpike in Windsor Locks, proceeds north along the eastern perimeter of Bradley International Airport.

In northern Suffield, Route 75 is known as North Street and eventually crosses the state line into Agawam, Massachusetts.

[4] The northernmost 4.3 miles (6.9 km) of Route 75 within the town of Suffield is a designated state scenic road.

In 1981, as enacted by Public Act 81-463, this portion of Route 75, by then repaired and revitalized, was officially renamed the Ella T. Grasso Turnpike, in honor of the first elected female governor in the United States (and a native of Windsor Locks).