Jacknife Ridge Road

Jackknife Ridge Road is a 13.9-mile point-to-point dirt and rock route that winds through Ginkgo Petrified Forest State Park and the Whiskey Dick Wildlife Area, offering views of the Columbia River and multiple pull-offs along the way. Starting from the southern end, a locked gate requires a free permit, which can be obtained in advance at https://park.wa.gov/access-request-recreation-drive-gingko-state-park. Obtaining the permit before arrival is recommended due to poor cell reception and to confirm the route is open. Beyond the gate, the trail is narrow, rough, and rocky, with tall dry brush growing along the center and overgrown sections in places, as well as off-camber and sandy sections that remain consistent throughout the route. Users should take care not to stop where hot parts of a vehicle may come into contact with dry vegetation. At 3.8 miles, a second gate marks the boundary of the Whiskey Dick Wildlife Area and uses the same access code. The route then continues along the eastern boundary of a winter closure area subject to closure from February 1 to May 1. At approximately 8.1 miles, a short spur trail provides access to the river. The trail continues with similar conditions, including a steeper section near Skookumchuck Creek that may require 4WD for some vehicles, before ending at an intersection with Skookumchuck Crossover Road. Jackknife Ridge Road is open year-round within the Whiskey Dick Wildlife Area, but is subject to unpredictable closures and access restrictions within Ginkgo Petrified Forest State Park. Users should verify conditions before traveling. Only street-legal vehicles are allowed within the State Park, and a Discovery Pass is required for access along the entire route.