State Route 330 has been closed since March 16 after heavy rains caused major culvert damage on the mountain highway.
Crews will continue to work on the roads over the next three to four weeks, but at least one lane will be open at all times. Flaggers and pilot cars will lead drivers through the construction area between 7 a.m. and 6 p.m. Monday through Thursday.
Caltrans says drivers should expect delays of 5 to 15 minutes. Road work will not be conducted during the weekends.