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According to a social media post, you can now get from Redlands to Jenks Lake Road, i.e., you can reach Forest Falls, Angelus Oaks, and the South Fork trailhead. You just can't go over Onyx Pass to Big Bear.

https://www.facebook.com/groups/439837596209280/

Based on the lat-lon they gave with the photo, the actual road damage is near the trailhead of the trail that goes to Heart Bar Peak: caltopo.com/map.html#ll=34.16817,-116.76046&z=14&b=mbt