How will this effect you?
Only hikes that start along the Scenic Loop will be closed to cars. This means you would have to walk in from State Route 159, not a good alternative.
Calico Basin parking area would be closed, but you can park outside the gate, so that's no big deal.
Kraft Mtn parking area would probably be closed, but you can park outside the gate, so that's no big deal.
First Creek parking area will most likely be open.
South Red Rock should also be open.
Bottom line: Hikes along the Scenic Loop would require a very long walk in and out. Best to hike at First Creek, South Red Rock, or Calico Basin until the government reopens.