 In 1954, US 240 was moved to Washington National Pike; the old alignment became US 240 Alternate and then MD 355 in 1956.The section of freeway from US 15 to the Frederick Freeway was built between 1954 and 1956 concurrent with the first section of the Frederick Freeway.The original interchange between the Frederick Freeway and Washington National Pike included two ramps between the north–south and east–west portions of the Frederick Freeway.