Motorists should be prepared for minor delays Tuesday morning on northbound Highway 101 near Prunedale.

Caltrans officials will be working to repair a damaged guardrail on a half-mile section of the highway, between Echo Valley and South Dunbarton roads. Roadwork hours will be from 9 a.m. to 2 p.m. The right northbound lane will be closed for the repairs.

Delays shouldn't be more than 10 minutes, Caltrans officials say.