Railroad Ridge is a high mountain ridge at an elevation of 3.180m (10,433ft) above the sea level located in central Idaho’s White Cloud Mountains, in USA. Avoid driving in this area if unpaved mountain roads aren't your strong point and stay away if you're scared of heights. It’s said to be the highest road accessible to full-size vehicles in Idaho.
Located in Custer County, the road to the summit is extreme. High clearance 4WD recommended. Do not travel this road in severe weather conditions. Avalanches, heavy snowfalls and landslides can occur anytime, being extremely dangerous due to frequent patches of ice. Railroad Ridge is truly one of those places that is impossible to describe, one needs to venture up on their own for their own experience.
This road tests the skill, and courage, of any driver. It’s definitely not for anyone suffering from vertigo or a fear of landslides. The track climbs up from 7,200 feet to 10,600 feet, 3,400 feet of gain over just a few miles of steep road.
The climb is simply terrible, with a notorius lack of oxygen that tests the organisms and a high degree of steepness. Most people feel altitude sickness at around 2,500-2,800 meters. Near the pass, oxygen is in short supply. The track is very narrow with almost zero pullouts and follows switchbacks up to the crest of the ridge.