Art Young of the Ardiente Community Hiking Enthusiasts (ACHE) has submitted these photographs of the arrow associated with Los Angeles—Salt Lake Airway Beacon 31A (NGS PID GR1900). The arrow, which is referred to in the linked survey datasheet, is about 700 feet east of the former beacon site. The arrow has been painted orange since the images in Google’s satellite view were captured. It appears to be in excellent condition.
Thanks for your contribution, Art!