In early plans for the Interstate Highway System, the connection across northern Pennsylvania would have paralleled U.S. Route 6N (US 6N) and US 6 from what became I-90 near West Springfield, Pennsylvania east to Scranton. (From Scranton east to Hartford, Connecticut, I-84 was built parallel to US 6.) From Scranton a route went southeast along US 611 to the Stroudsburg area, and then east along US 46 to near New York City. On May 22, 1957, a request by Pennsylvania to move the corridor south was approved by the Federal Highway Administration. (The Scranton-Stroudsburg connection was kept, and the new alignment merged with it west of Stroudsburg.) However, when the initial numbers were assigned later that year, they were drawn on a 1947 map, and so the corridor across northern Pennsylvania became part of I-84, while the Scranton-New York route became I-82. (I-80 ran along the Pennsylvania Turnpike to Harrisburg, where it split into I-80S to Philadelphia and I-80N to New York.) This was corrected the next year, as the Keystone Shortway became part of I-80, the turnpike west of Harrisburg became I-80S (later I-76), and I-80N became I-78. I-84 was truncated to Scranton, and the Scranton-Stroudsburg connection became I-81E (later renumbered I-380).