Roadworks which got underway this morning will disrupt traffic between Portumna and Loughrea for three days this week.
Galway County Council is carrying out works on the N65 at Gortymadden.
A stop and go system will be in place to manage traffic while the works are taking place, and motorists are advised to give extra time for journeys.
The works will take place from 9am to 6pm each day, and are expected to last for three days.
Overnight roadworks will also take place on the M17 & M18 northbound for three nights this week.
Lane closures will be in place overnight on Tuesday – Thursday from 9pm to 6am the following morning.
Tuesday night’s works will be from Junction 17 Kiltiernan to Junction 18 Rathmorrissey, and the following two nights will see works from Junction 18 to Junction 19 Annagh Hill.