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Consultants propose bridge relocation, road narrowing and compensatory storage to address Main Street flooding
Summary
Stevens and Associates presented options for South Londonderry including Route 100 realignment, moving a bridge to Crescent Street, relocating the fire house to higher ground, narrowing roads to calm traffic, and compensatory storage to reduce the need to raise Main Street buildings.
Stevens and Associates presented a conceptual package of measures intended to reduce flood impacts on Londonderry's Main Street and to support a reconfigured village center. The consultants said mapping and charts show the location of the 100-year floodway in relation to Main Street and outlined options such as redesigning the Route 100 route, relocating the bridge to where Crescent Street meets Route 100, and creating compensatory storage so that some buildings might not need to be raised.
The presentation described complementary measures including narrowing town roads to slow traffic, moving the fire house to higher ground, creating off-street parking, adding sidewalks, and a pedestrian bridge to support a walking loop. Stevens and Associates stated that the theory is that "if the buildings and bridge are moved, compensatory storage opportunities could be available which could make raising the remaining buildings unnecessary." The proposals remain conceptual; presenters repeatedly framed them as options requiring further study and coordination with state and federal agencies.
