This legislation proposes amendments to the Intermodal Surface Transportation Efficiency Act of 1991. Its core purpose is to elevate a major existing highway to Interstate status, thereby enhancing national transportation infrastructure. The bill specifically designates United States Route 287 , which runs from Port Arthur, Texas, to Choteau, Montana, as a High Priority Corridor . Subsequently, this entire corridor is officially designated and numbered as Interstate Route I-47 . This action formally incorporates a lengthy north-south route into the Interstate Highway System, potentially improving connectivity and economic development along its path.