Newtown Turnpike, Main Street, Mount Pleasant Road, Hawleyville Road, Whisconier Road

Direction: North/South
Southern Terminus: Connecticut Turnpike (I-95) in Bridgeport
Northern Terminus: Federal Road (US 7) in Brookfield

CT 25 is a north-south route in western Connecticut. It begins, multiplexed with CT 8, at the Connecticut Turnpike (I-95) in Bridgeport. It runs north as an unnamed eight-lane expressway. Just south of the Merritt Parkway (CT 15), CT 8 splits off to the east and CT 25 continues north as a six-lane expressway. In Trumbull, the expressway ends and CT 25 runs north along Newtown Turnpike and Main Street to Mount Pleasant Road (US 6). It is multiplexed along Mount Pleasant Road for a short distance and then runs north again as Hawleyville Road and Whisconier Road. It ends at Federal Road (US 7) in Brookfield.