page_title: U.S. Route 400
section_title: History
hierarchical_section_title: U.S. Route 400 / History
caption_attribution_description: The eastern terminus of U.S. Route 166 and U.S. Route 400 in Newton County, MO.
context_page_description: U.S. Route 400 is a 481.306-mile-long mostly east–west U.S. Highway, commissioned in 1994. The highway's western terminus is in Granada, Colorado, at an intersection with US 385. The highway's eastern terminus is southwest of Joplin, Missouri, near Loma Linda, at an interchange with Interstate 44, with which it shares with US 166. It originally ended in Garden City, Kansas; in 1996 it was extended to its current western terminus. Its route number is a "violation" of the usual AASHTO numbering scheme, as there is no "parent" US 0.
context_section_description: US 400 was first established on December 1, 1994, and at that time ran from the east end of the US-50 and US-83 overlap, eastward to the east county line of Cherokee County, Kansas.
caption: U.S. 400's eastern terminus approaching I-44 in Newton County, Missouri
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