Motorists in St Albans are being warned of delays as roads are closed for repairs.
All of the works will take place on Thursday and Friday between 7.30am and 6pm.
Selby Avenue will be closed at the junction of Upton Avenue to the junction of Britton Avenue.
Laburnum Grove will also be closed at the junction of Watford Road to the end of the cul de sac and Orchard Drive will be closed between Mayflower Road and Penn road.
Hertfordshire County Council is responsible for the work.