I have personally driven every inch of I-5 from HWY 1 in Mex to HWY 1 in Canada and back, during all seasons.
I believe it is in the Sisiykou Passes, right after the border crossing to Oregon.
The second contender would be the top of the "grapevine" a high, steep, pass goining south to LA, reaching its peak, and slowly descending ( a lot of western and "war" movies have been shot in this area.
The highest elevation along Interstate 10 is near Wilcox, Arizona, where it briefly reaches 5,000 feet.
Williams, AZ
The Highway sign says "Siskiyou Pass, Elev. 4,100', highest point on Interstate 5"
The highest elevation on I-40 in Oklahoma is approximately 4,583 feet above sea level, which occurs near the town of Texola in the western part of the state. This elevation is part of the Rocky Mountain foothills and marks the highest point along the interstate as it traverses Oklahoma. The area is characterized by its rolling hills and scenic landscapes.
which region the Georgia has the highest elevation
the highest elevation in Sudan is the Nuba Mountains and the elevation is like 3,000. But I don't know the highest elevation in Switzerland
Alaska has the highest elevation with Mount McKinley.
Alaska has the highest elevation at Mount McKinley.
Colorado has the highest mean elevation.
The state that has the highest average elevation is Colorado. However Alaska is the state that has the single highest elevation at Mount McKinley.
The highest elevation on the drive from Las Vegas to Denver is approximately 11,158 feet at the summit of Loveland Pass in Colorado. This mountain pass is located along Interstate 70 and offers stunning views of the surrounding Rocky Mountains. The journey involves traversing diverse landscapes, with significant elevation changes as you approach the Rockies.
Colorado has the highest mean elevation.