Looks like it was open in 2021 and 2022, but I haven't heard much about it. The reviews of the reservation process and particularly the gate code issue aren't great.
www.blm.gov
www.blm.gov

BLM restores motorized vehicle access to the Clear Creek Management Area | Bureau of Land Management
(Updated Oct. 2) MARINA, Calif. — The Bureau of Land Management has completed repairs to Clear Creek Road in the Serpentine Area of Critical Environmental Concern allowing visitors to receive permits online and enter the area in San Benito County. The full order rescinding the closure can be...

Clear Creek | Bureau of Land Management
Click here for more information on fire restrictions and the permitting process Overview of Clear Creek Management Area Clear Creek Management Area (CCMA) encompasses approximately 75,000 acres, of which 63,000 acres are public lands managed by the Bureau of Land Management Central Coast Field...