Location: AB-4 and AB-500, Coutts Just after the 500 junction, we’re 1 km from the border. Location: AB-4 and I-15, Cty of Warner No. 5 Welcome to the border! Highway 4 continues into Montana as Interstate 15, which goes all the way to San Diego, California.  N to AB-501  S to MT S-214  E to … Continue reading Alberta Highway 4, AB-500 to I-15/MT Int’l Boundary