The CANAMEX corridor is a series of improvements to freeways and other transportation infrastructure linking Canada to Mexico through the United States. The corridor was established under the North American Free Trade Agreement. Currently the corridor is defined by a series of highways. However, the corridor is also proposed for use by railroads and fiber optic telecommunications infrastructure. Origin While the tri-lateral corridor was defined in NAFTA, the U.S. portion of CANAMEX Trade Corridor was outlined in 1991 in the "ISTEA" highway bill, and defined by Congress in the 1995 National Highway Systems Designation Act, Public Law 104-59, November 28, 1995. Route description The CANAMEX corridor is defined by the numbered highway designations along its length: Canada British Columbia Highway 97 (Alaska Highway) Highway 2 - Dawson Creek to Alberta border Alberta Highway 43 - British Columbia border to Highway 16 Highway 16 - to Edmonton Highway 216 through Edmonton Highway 2 - Edmonton to Calgary Highway 201 through Calgary Highway 2 - Calgary to Fort Macleod Highway 3 - Fort Macleod to Lethbridge Highway 4 - Lethbridge to Canada–United States border (Continues as Interstate 15) United States Montana - Interstate 15 Idaho - Interstate 15 Utah - Interstate 15 Arizona - Interstate 15 - Utah border to Nevada border across Arizona's northwest corner Nevada Interstate 15 - Utah border to Las Vegas U.S. Route 93 -Las Vegas to Arizona state line, this portion has been upgraded to Interstate Highway standards with the added designations: Interstate 515 - Las Vegas to Henderson Interstate 11 - Henderson to Arizona border Arizona U.S. Route 93 - Nevada border to Wickenburg Proposed to be upgraded to Interstate Highway standards and re-designated Interstate 11 U.S. Route 60 - Wickenburg to Surprise (makes the highway drivable as a continuous route though it is not officially included) Arizona State Route 303 - Surprise to Goodyear (Bypasses surface streets, not officially included) Interstate 10 - Goodyear to Tucson Interstate 19 - Tucson to Nogales, Arizona Arizona State Route 189 - Nogales, AZ to Mexico–United States border Mexico Nogales, Sonora - Mexico City - Mexico Federal Highway 15D Highway The United States portion of the highway was established as a High Priority Corridor. The treaty establishes that the CANAMEX highway will be upgraded to at least 4 lanes along its entire length. In 2008, 84% of the highway in the United States was compliant, and 86% of the