U.S. District Judge Tena Campbell set the deadline on Friday after denying a motion to allow the signs to remain while the county appeals her order mandating their removal from federal lands.
Campbell ruled on May 16 that the placement of county road signs in the monument is unconstitutional.
That decision capped a five-year fight between conservation groups and Kane County, whose signs claimed the roads as a county right-of-way and essentially invited off-road traffic on trails in protected areas of the monument.
The county claimed the roads under RS 2477, a Civil War-era mining law that granted rights of way across public land. The law was repealed in 1976 but existing claims were grandfathered in, leading to numerous disputes.
