LEMOYNE, Pa. (WHTM) – PennDOT has found a way to keep traffic moving when it replaces a structurally deficient bridge on Route 581 next month.

The work on the bridge over 10th Street in Lemoyne will cause only partial closures, and only on weekends, PennDOT Secretary Leslie Richards said Thursday.

Richards said parts of the new bridge have been pre-assembled a short distance away. The sections will be lifted into place by a crane capable of carrying 650 tons.

The partial weekend closures, beginning June 5, will last no more than four weekends.

Richards said the bridge rehabilitation project could have taken as long as a year and a half and caused full-time traffic disruptions.

During the weekend closures, east and westbound traffic will be closed in stages. Only one direction will be detoured at a time. The detours will be in place from 9 p.m. Friday to 6 a.m. Monday.

The new bridge will use shallower steel girders to raise the the clearance on 10th Street from 13 feet, 11 inches to 14 feet, 7.5 inches. It will replace a bridge built in 1958.