Work to widen a portion of Los Berros Road in Arroyo Grande is now underway.
The road between Pomeroy and Quailwood Lane will be widened for bike lanes and a paved shoulder added.
Repaving along this stretch of road will also take place.
Drivers may experience slight delays between 8:30 a.m. and 3:30 p.m.
Work on the more than $1.1 million project is expected to wrap up by early October.