"West" . . "East" . . "U.S. Route 166 (US 166) is a 164-mile (264 km) west\u2013east United States highway. This route and US-266 are the only two remaining spurs of historic U.S. Route 66 (which was decommissioned in 1985), since US-666 was renumbered to US-491 in 2003.US-166 meets the old route of US-66, now designated US-69 Alternate, in Baxter Springs in the southeast corner of Kansas."@en . . . . . . "166" . . . . . . "263932.0"^^ . "US" . .