Two full overnight closures of Rt. 1 Monday and Tuesday At 9 p.m. Monday through Tuesday morning and then 9 p.m. Tuesday through Wednesday morning, the process of restoring Route 1 southbound to its full three lane capacity begins. By the early morning hours of Wednesday, Dec. 23, Route 1 Southbound will be restored to its full three lane capacity. The reopening operation will require two full overnight closures of Route 1 southbound where it passes through the Chelsea Viaduct portion of the combined Tobin Bridge/Chelsea Curves Rehabilitation Project. The first closure will take place on Monday, 12/21 from 9 p.m. to 5 a.m. The second closure will begin at 9 p.m. on Tuesday 12/22 and end with the re-opening of Route 1 southbound to its full three lane capacity.