A plan to move Route 156 about 60 feet to the north as part of a bridge replacement on the East Lyme border means moving history, too. Roughly half an acre on the Old Lyme side of the river has been undergoing phased archaeological surveys since late that same year. A report documenting the first two phases by Mansfield-based Archaeological and Historical Services, Inc. was obtained by the Day, but is not publicly available. A 2021 list of pending bridge projects from the DOT put the cost of the replacement at $7.3 million to be covered by federal and state funds. Construction was estimated then to begin in 2023. DOT’s online bridge database rated the overall structure of the 1982 bridge as poor.