On June 29, 1970, a renumbering was approved in the Pittsburgh area, with the main effect being rerouting I-79 to bypass Pittsburgh to the west on the former I-279. I-279 was moved to the former I-79 north of downtown, and the former I-79 from downtown southwest to new I-79 became a western extension of I-76. (It was then that I-876 was designated for former I-479.) A realignment and extension of I-76 into Ohio, taking over the rest of I-80S to I-71 east of Lodi, was approved January 11, 1972. The former I-76 from Monroeville west into Downtown Pittsburgh became I-376, and I-279 was extended southwest from downtown along former I-76 to I-79. (I-876 was renumbered to I-579 then.) Signs in Ohio were changed September 1, 1972; the old I-80S signs remained for about a year.