Yes, this is going to block inbound traffic to Yosemite NP for a bit.

The El Portal Road and Arch Rock Entrance into Yosemite National Park remain closed due to a rockslide that occurred yesterday around Noon. Yosemite National Park staff are assessing the area and the road will remain closed at least through the weekend of June 17-18, 2017. After the assessment is complete, crews will begin to remove rock debris and repair the road to make it safe for visitors to travel on. There is no estimate for when the road will reopen. More about this here.