News article mentions gravel road, 14 mile lenght, suitable for off road and high clearance vehicles.

Also note that once you get there, leave your camera in the car. You can not take anything out on the skywalk such as a camera or binoculars as they are afraid someone might drop an item and scratch the glass. Booties provided for your shoes. At the minimum $75.00 to walk out there I hope you get to keep the booties.