SOUTH BRUNSWICK, NJ - The portion of Davidsons Mill Road between Route 130 and Riva Avenue has been reopened this afternoon after being shut down earlier this morning. A water main break forced the closure and the resulting detour shortly after 9 a.m. on Monday. The section of the roadway was closed for serveral hours while repairs were being conducted. The South Brunswick Police Department released a Nixle advisory alerting residents of the opening at 1:50 p.m.