US 400 is an east-west U.S. Highway. Its route number is a "violation" of the usual AASHTO numbering scheme, as there is no US 00.

Termini

As of 2004, the highway's eastern terminus is east of Joplin, Missouri at an intersection with Interstate 44. Its western terminus is in Granada, Colorado at an intersection with US 385.

States Traversed

The highway passes through the following states:

• Missouri
• Kansas
• Colorado

Related US Routes

• US Highways 412 and 425 are similar violations of the standard numbering scheme.
• List of U.S. Highways

Sources

• Endpoints of US highways (used with permission)