The new south bound bridge (Phase 2) of the $44 million I-91 Rockingham VT Bridge Replacement Project is underway. The new north bound bridge (Phase 1) is now carrying NB & SB traffic of Vermont I-91 over the Williams River.
The new 880-foot-long bridges are 4-span structures, with spliced concrete beams and concrete bridge decks. The bridge decks are 130 ft. above the Williams River. This project is Reed & Reed’s first ever spliced concrete beam bridge. The beam structure consists of five runs of 7 individual concrete beams that were installed on temporary support framework, aligned and held in position with thirty steel strong backs. Cast in place concrete closures were placed between the ends of the beams and then three, 19 strand tendons running from abutment to abutment were installed and tensioned. Crews will be grouting the tendon and working on the concrete deck and barrier for the south bound bridge. Work is expected to complete this season. Once the new SB bridge is open, the temporary crossovers will be removed and traffic restored fully in both directions.