Interstate 25, Pan-American Freeway segment in New Mexico and Colorado.
Interstate 25 is a major north-south highway stretching across 1,060 miles (1,700 km) through New Mexico, Colorado, and Wyoming. The road passes through mountain valleys and high plains, serving as a primary route connecting major cities in the region.
Construction started in 1948 and the first section opened in 1950 as one of Colorado's earliest Interstate highways. Over time it grew into a vital transportation link connecting three states across the western United States.
The road follows ancient trading pathways that connected different regions for centuries. People today drive the same north-south route that merchants and settlers once traveled on foot and by wagon.
Most sections have four lanes, with extra lanes in the northern area to reduce traffic jams. Winter driving often requires snow chains or caution, especially in higher elevation areas.
The pass along this route reaches 2,400 meters (7,800 feet) elevation and closes frequently in winter when snow arrives. This makes it one of the most challenging stretches for drivers during cold months.
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