 The route makes several 90-degree turns as it shifts to Chestnut Tree Hill Road and then to Pines Bridge Road.The road soon enters the town of Beacon Falls, crossing over the Naugatuck River a mile beyond the town line.Route 42 continues along the east bank of the Naugatuck River via a short (0.25-mi) section of Old Turnpike Road to a partial interchange with Route 8, where only access to southbound and from northbound Route 8 is possible.