U.S. Route 66 Bypass (St. Louis, Missouri)

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Bypass US 66 around the St. Louis area was the designation for the relocated U.S. Highway 66, commissioned as a bypass in 1958. Bypass US 66 is now (roughly) Interstate 270 and Lindbergh Boulevard (U.S. Highway 61/U.S. Highway 67).

Until 1969, when Business US 66 was returned to the US 66 designation, no non-bannered US 66 existed in the St. Louis area. In 1938, US 66 was moved on a bypass around the city of St. Louis. The original alignment of US 66 became the business route. In 1969, the business route, now joined with the East St. Louis business route was redesignated US 66, while Bypass US 66 was redesignated Interstate 270.