Mariposa County Caltrans Road Work on Friday, June 26, 2015 on Highway 49 North Details Last Updated: Monday, 22 June 2015 11:23 Published: Monday, 22 June 2015 11:22 View Comments June 22, 2015 - Caltrans will be performing road work on Highway 49 North from the Tuolumne/Mariposa County line to one mile south of Penon Blanco in Mariposa County. This is a one day operation on Friday, June 26, 2015 from 8:00 A.M. to 4:30 P.M. View the discussion thread. back to top