Interstate 70 is a transcontinental Interstate Highway in the United States, stretching from Cove Fort, Utah, to Baltimore, Maryland. In Colorado, the highway traverses an east–west route across the c
Westbound I-70 on a viaduct inside Glenwood Canyon, paralleling the Colorado River and former Denver and Rio Grande Western Railroad (now Union Pacific) main line
Warning sign stating, "Trucks, Don't be Fooled—4 more miles [6.4 km] of steep grades and sharp curves"