Two gaps remain in the Backbone Trail, and state and federal parks officials say it may be two to three years before the 15 to 17 missing miles are completed.
The smaller one divides the eastern portion of the trail, between the Dead Horse Trailhead in Topanga State Park and Saddle Peak.
California Department of Parks and Recreation officials are awaiting Coastal Commission approval to build a steep section of the trail through Hondo Canyon to Saddle Peak Road. Four miles of trail will fill the gap, said Frank Padilla, district resource ranger for state parks.
Eventually, park officials hope to install a traffic light or an overpass or underpass to help hikers and equestrians across Topanga Canyon Boulevard.