List of highways numbered 66

Besides U.S. Route 66, the most well-known, numerous highways are numbered 66:

Australia

• Barkly Highway (Northern Territory)

Canada

• Alberta Highway 66
• Highway 66 (Ontario)

France

• A66 autoroute

Finland

• Kantatie 66 (Orivesi - Lapua)

Germany

• Bundesautobahn 66

Hungary

• 66-os főút (Kaposvár - Pécs)

India

66

NH 66

Ireland

• N66

Israel

• Highway 66 (Israel)

Malaysia

• Malaysia Federal Route 66

Slovakia

• Road 66 (Slovakia) From Slovak - Hungarian border at Šahy to Tatras mountain

Spain

• Autovía A-66 (Silver Route)

United Arab Emirates

• E 66

United Kingdom

• A66 road
• M66 motorway

United States

Interstate and US highways

• Interstate 66, a highway connecting Interstate 81 to Washington, D.C.
• U.S. Route 66, the most common meaning. An asterisk (*) below will denote the current-day designations that share a former alignment of this highway. From west to east, states on US 66 are:
  • California, California State Route 66*, see U.S. Route 66 in California.
  • Arizona, Arizona State Route 66*, see U.S. Route 66 in Arizona.
  • New Mexico, currently no highway numbered '66' in this state. See U.S. Route 66 in New Mexico.
  • Texas, a 1956 freeway alignment of US 66 is now Interstate 40. See U.S. Route 66 in Texas. The state route 66 is not related to US 66.
  • Oklahoma, Oklahoma State Highway 66*, see U.S. Route 66 in Oklahoma.
  • Kansas, K-66 (Kansas highway)*, see U.S. Route 66 in Kansas.
  • Missouri, Missouri Route 66*, see U.S. Route 66 in Missouri.
  • Illinois, Illinois Route 126 was part of US 66. See U.S. Route 66 in Illinois.

Other state highways

• Alabama State Route 66
• Arizona State Route 66*
• Arkansas Highway 66
• California State Route 66*
• Colorado State Highway 66
• Connecticut Route 66
• Florida State Road 66
• Georgia State Route 66
• Hawaii Route 66
• Idaho State Highway 66
• Illinois Route 66 is now Illinois 126*
• Indiana State Road 66
• Iowa Highway 66
• K-66 (Kansas highway)*
• Kentucky Route 66
• Louisiana Highway 66
• Maryland Route 66
• Massachusetts Route 66
• M-66 (Michigan highway)
• Minnesota State Highway 66
• Missouri Route 66*
• Missouri Route 66 (1922), a pre-1926 highway not connected to US 66
• Montana Highway 66
• Nebraska Highway 66
• Nevada State Route 66 (former)
• New Jersey Route 66
• New York State Route 66
• North Carolina Highway 66
• North Dakota Highway 66
• Ohio State Route 66
• Oklahoma State Highway 66*
• Oregon Route 66
• Pennsylvania Route 66
• South Carolina Highway 66
• Tennessee State Route 66
• Texas State Highway 66
  • Texas State Highway Spur 66
  • Farm to Market Road 66 (Texas)
  • Texas Park Road 66
• Utah State Route 66
• Vermont Route 66
• Virginia State Route 66 (former)
• West Virginia Route 66
• Wisconsin Highway 66

• Puerto Rico Highway 66
• U.S. Virgin Islands Highway 66