Contra Costa County Public Works Department will repair guardrails at the California Aqueduct, located between Bruns Road and North Bruns Road on Byron Highway in Byron from Oct. 11-14.
The work is scheduled for 8 a.m.-5 p.m., weather permitting.
Electronic message boards will be placed in advance to alert drivers of the scheduled work.
There will be traffic control through the work area, and a lane closure will be required during working hours.
Drivers should expect delays, according to officials.