Interstate 66 Highway Sign - Official U.S. Route Marker #134414 (License: Personal Use)

This image shows the standardized U.S. Interstate highway shield for route 66, featuring a red banner at the top with “INTERSTATE” in white uppercase letters, and a blue lower field with the number “66” in bold white numerals. The shield shape follows the Federal Highway Administration’s specifications for national highway signage, ensuring consistency and high visibility for drivers. It is commonly seen on roadways, maps, and official transportation documentation.

Used on government transportation websites, travel guides, road safety materials, and mapping services to identify Interstate 66; matches user intent for route planning, historical interest in Route 66 (though distinct from historic US 66), or understanding U.S. highway signage systems.