proposal for US 666 to AASHTO, which was rejected. AASHTO cited that the route was not direct, and SR-24 was not built to U.S. Highway standards. UDOT did not pursue the extension of US 163, even though the Utah state legislature had approved the new road from Bluff to Montezuma creek as route 163. With this extension, the Utah definition of US 163 conflicted with the AASHTO definition. UDOT resolved this discrepancy by signing the extended portion as State Route 163. In 2004, the plan to extend US 163 was abandoned, and the extension was renumbered SR-162 to "make the state route numbers run synonymous with the U.S. route designation." Although the state changed the definition of US 163 back to match the national definition in 2004, the portion north of Bluff remained unsigned. In October 2008, UDOT requested and obtained approval to truncate US 163 to the junction with US 191 resolving the discrepancy. Junction list See also List of appearances of Monument Valley in the media - US 163 is visible in several movies etc. filmed in Monument Valley References External links US 163 at Alan Hamilton's Arizona Roads Endpoints of U.S. Highway 163 63-1 63-1 63-1 163 Transportation in Navajo County, Arizona Transportation in San Juan County, Utah Scenic highways in Arizona