It seems to be closed until Sept. 30, 2018.
"The Closure of Calaveras Road to thru traffic between Milpitas and Sunol has been extended to September 30, 2018.
The road had also been closed on weekends and holidays because of a land slide that undermined the road within the closure section. We anticipate the road to reopen for weekend use sometime in 2018. Please keep checking back for schedule details.
This is due to storm damage along this stretch of road. Under normal conditions and the construction schedule, Calaveras Road would be open to thru traffic on weekends and holidays. However, this is no longer the case, and the road will remain closed every day to all traffic until further notice.
Please avoid this area and use alternative routes."