 Once the road was extended westward towards Columbus by 1968, access was routed to exit 122, with the western access road continuing US 40 back to the old National Pike becoming part of SR 158 (though the westbound lanes were abandoned).The following year, the highway was opened eastward to Zanesville, with a new interchange, exit 142, at Gratiot.The at-grade intersection with the old National Pike was subsequently blocked off, to be erased by years of overgrowth.