I did some searching and found this on the NPS Yosemite site under park alerts. It appears to be a older alert since this project was announced in 2006 but there was a delay in it's implementation. I am not sure if this is what is going on so I guess you will have to call for information.
ww.nps.gov/yose/learn/management/eproad.htm
El Portal Road (Highway 140 from Merced)
CLOSED west of Yosemite Valley 10 pm to 6 am (beginning Dec. 9) Sunday nights through Thursday nights
Big Oak Flat Road (Highway 120 from Manteca)
CLOSED west of Yosemite Valley 10 pm to 6 am (beginning Dec. 9) Sunday nights through Thursday nights
30-minute delays at other times
I am still not comfortable with the rock shed idea.
Edited 2 time(s). Last edit at 10/17/2015 11:51PM by parklover.