In April 1963, the state of Pennsylvania proposed renumbering the interstates. As part of this, I-80S would be redesignated as I-76 between the Pittsburgh Interchange and Valley Forge Interchange, and I-280 would be redesignated as I-276 for its entire length. This was because the spur latter did not connect to I-80 in northern Pennsylvania, white the former did not connect to it at all, both violations of interstate highway standards. The changes were approved by the Federal Highway Administration (FHWA) on February 26, 1964. With this, the turnpike would carry I-76 from the Pittsburgh Interchange to Valley Forge Interchange and I-276 from the Valley Forge Interchange to the New Jersey state line. Signage was updated with this change.
In April 1963 the state of Pennsylvania proposed renumbering the interstates As part of this I-80S would be redesignated as I-76 between the Pittsburgh Interchange and Valley Forge Interchange and I-280 would be redesignated as I-276 for its entire length This was because the spur latter did not connect to I-80 in northern Pennsylvania white the former did not connect to it at all both violations of interstate highway standards The changes were approved by the Federal Highway Administration (FHWA) on February 26 1964 With this the turnpike would carry I-76 from the Pittsburgh Interchange to Valley Forge Interchange and I-276 from the Valley Forge Interchange to the New Jersey state line Signage was updated with this change