The Pennsylvania Turnpike, often considered the first superhighway in the United States, opens to traffic.

Pennsylvania Turnpike

East–west toll highway

The Pennsylvania Turnpike, sometimes shortened to Penna Turnpike or PA Turnpike, is a controlled-access toll road which is operated by the Pennsylvania Turnpike Commission (PTC) in Pennsylvania. It runs for 360 miles (580 km) across the southern part of the state, connecting…