Railroad Ridge is the highest road in Idaho

Railroad Ridge is a high mountain ridge at an elevation of 3.180m (10,433ft) above the sea level located in Custer County, in the US state of Idaho. It’s definitely not for the faint of heart. It’s said to be the highest road accessible to full-size vehicles in Idaho.

Railroad Ridge

Can you drive to Railroad Ridge in Idaho?

Tucked away in central Idaho’s White Cloud Mountains, the unpaved road to the summit is very challenging. It’s called FR 669. It is truly one of those places that is impossible to describe: one needs to venture up on their own for their own experience. The road is tough. However, the views at the top make it so completely worth it. The road is intense, only for vehicles with high clearance and four-wheel-drive. People with a fear of heights might want to stay away. The intense track is very narrow with almost zero pullouts and follows switchbacks up to the crest of the ridge. Although this journey may not suit everyone, it's certainly a journey you'll never forget.

Is the road to Railroad Ridge in Idaho open?

Remember this is a mountainous area, climbing up a high mountain, with a notorius absence of oxygen. Altitude and extreme weather are always a factor. The road is usually impassable from late October through late June or early July (depending on snow). The open and close dates all depend on snowmelt and snowfall each year. Definitely don't attempt this road in severe weather conditions since avalanches, heavy snowfall, and landslides are known to occur at any time.

How long is the road to Railroad Ridge in Idaho?

Starting at Clayton, the road to the summit is 44.73km (27.8 miles) long. Over this distance the elevation gain is 1.539 meters (5,049 ft). It features steep sections. You'll definitely want to take it nice and slow to ensure you don't drive over any sharp rocks or large dips. The views at the top make it so completely worth it. On a clear day, you'll be able to see for miles upon miles.
Pic: http://www.network54.com/Forum/105717/thread/1486595785/A+Lost++Mountaintop+Mine+Story