Tenby's Crackwell Street will be closed to vehicles from Monday for five days, in order for sewer repair works to be carried out by Pembrokeshire County Council.
Crackwell Street is one-way, with traffic permitted to travel in a north-west direction only. The alternative route for this traffic will be via St. Julian Street, Tudor Square and High Street.
The one-way traffic order for Crackwell Street will be temporarily suspended while the closure is in operation to enable limited vehicular access to affected properties from either end of the street. Pedestrian access will be maintained for the duration of the closure.