Is the western coastal expressway from Yangjiang to Jiangmen allowed?

Don't continue. According to the owner's guide information, as of August 3, 2023, when the western coastal expressway Yangjiang direction (Yan 'an Station-Duhu Station) is closed, vehicles heading for Yangjiang should get off at Yan 'an Station and then enter the western coastal expressway along G228 National Road-Duhu Station.