Bydd mesurau rheoli traffig ar gyfer cau un lôn ar waith o 07:00 ddydd Llun i 15:30 ddydd Gwener heb unrhyw reolaeth traffig ar y penwythnosau a gwyliau banc. Mae hyn er mwyn gwneud y mwyaf o amser sifftiau drwy beidio â gorfod symud offer ar ôl pob shifft.
Traffic management measures for a single lane closure will be in place from 07:00 on Mondays to 15:30 on Fridays with no traffic management on the weekends and bank holidays. This is to maximise working shift time by not having to mobilise and demobilise after every shift.