The Boise County Guide

Spring runoff prompts closure of Grayback Gulch Road
The Boise National Forest is temporarily closing National Forest System Road 347 (Grayback Gulch Road) and Mores Creek Bridge for public health and safety. Pursuant to 36 CFR 261.54 (e), this order will remain in effect until 12/31/17, or until rescinded, whichever comes first.
Warmer weather and precipitation have increased seasonal flows of local tributaries. In Mores Creek, a large diameter tree has fell into the creek, diverting flows and causing erosion and bridge failure near the entrance of Grayback Gulch Campground.
Forest Service engineers and technicians are removing portions of the bridge to prevent debris from traveling downstream that could result in additional resource and structure damage.
The Boise National Forest and Idaho Department of Lands co-manage NFS road 347, both agencies are working together on future access to the campground, which typically opens mid-May.
The Forest Service encourages visitors to be cautious around all streams and water sources. Visitors should look for posted warning signs and be aware of their surroundings.