I was intending to go to the Bradford ridge trail to get to the springs. But was detoured to drive into Hesperia at Summit Valley Road @ 7 miles east of the 15 freeway today. The sign before the detour said the road will be closed from 9-21 until 9-25.
I have confidence that some one smarter than me can find a website that explains more details than I can ever learn.
Just thought I'd inform all who might take this route.
Glad to help !