Ohio and the turnpike in Pennsylvania, was labeled I-80, and the rest of the route from Harrisburg to Philadelphia was assigned I-80S. (I-80N would have run from Harrisburg to New York City.) I-78 was assigned to a route from Norwalk, paralleling SR 18 through Akron to Youngstown and turning south there to end at the planned I-80. However, the 1957 numbering was drawn on a map from 1947, which did not include several changes that had been approved, specifically the Keystone Shortway across Pennsylvania. (The route in that corridor ran further north, along US 6, and was numbered I-84.) Thus, the final numbering, approved in 1958, assigned I-80 to the Norwalk–Youngstown route to reach the Keystone Shortway. The former alignment through Cleveland became I-80N; the turnpike was still not assigned a number from near Elyria (where I-80N and I-90 would split from it) to west of Youngstown. The route from west of Youngstown to Philadelphia was assigned I-80S, and extended east to I-295 in New Jersey when auxiliary Interstates were assigned in 1959. (The planned I-80N in Pennsylvania became I-78.) Initial spurs of I-80S were I-180 (now I-176), I-280 (now I-276), I-480 (now I-476) and I-680 (now I-676, though it swapped with I-76 in 1972). I-80 was realigned in Ohio by 1962, largely taking over former I-80N, which ran through Cleveland, joining the turnpike southwest of Cleveland. However, while I-80N was planned to split from I-80 near Kent and run northwest to Cleveland along SR 14, the new alignment of I-80 used the turnpike between the crossing west of Youngstown and the crossing with SR 14 at Streetsboro. The former I-80 from near Youngstown west to Akron became part of I-80S, as did a new alignment (already built as US 224) from Akron west to I-71 east of Lodi; the rest of proposed I-80 west to near Norwalk (which would have crossed I-71 near Medina) was removed from the Interstate Highway System. Ca. 1971, I-80 was moved to the Turnpike between Streetsboro and southwest of Cleveland; the old route became I-480. On April 16, 1963, due in part to the extension of I-79 south from Greater Pittsburgh, Pennsylvania proposed a partial renumbering. A new number, tentatively designated I-76, would run from Downtown Pittsburgh east on what was then I-70 (I-70S bypassed Pittsburgh to the south on what is now I-70) to the Pennsylvania Turnpike at Monroeville, and then east along