Interstate 78 (I-78) is an east–west Interstate Highway in the Northeastern United States, running from I-81 northeast of Harrisburg, Pennsylvania, through Allentown to western and northern New Jersey and terminating at the Holland Tunnel entrance to Lower Manhattan in New York City. I-78 links ports in New York City and North Jersey to points west, including the Lehigh Valley, the third largest metropolitan region of Pennsylvania. I-78 accommodates over four million trucks annually, representi…