Police are searching for a man, believed to be originally from Pembrokeshire, who's been missing in London since Friday.
They say the disappearance of 23 year-old Gianni Sonvico is "completely out of character".
He was last seen at an Underground station.
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Llantrisant Road from the junction with Heol Isaf to Cardiff Road, is shut in both directions as 'vital drainage' works get underway.
Emergency services including South Wales Fire and Rescue and South Wales Ambulance are currently on the scene at Coed Camlas.
A new review by Public Health Wales has found added tax on some foods could help reduce death and disease.