Forest Service Road 631 (Piedra Road) provides access to Williams Creek Reservoir and multiple trailheads in the San Juan National Forest, with large unpaved parking areas at the beginning near Pagosa Springs.

The road is maintained year-round and plowed in winter, making it accessible for fishing and recreation throughout the year.

Multiple USFS campgrounds and primitive dispersed campsites are available along the route, though visitors should check current conditions as the road experienced flood damage in October 2025.