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Engineers report Barker Road culvert replacement is cost‑effective but may be less competitive for Hazard Mitigation funding

Londonderry Select Board · March 4, 2025
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Summary

Staff said a concept design and benefit‑cost analysis for Barker Road culvert replacement produced a benefit‑cost ratio greater than 1, but noted statewide competition for Hazard Mitigation Grant Program funds may make the culvert less likely to be selected.

River project staff told the select board that a concept design and benefit‑cost analysis (BCA) indicate the Barker Road culvert replacement would be cost‑effective, but staff cautioned the Hazard Mitigation Grant Program cycle is competitive.

Megan (speaker 9) said the team "did go through a BCA and get a benefit cost ratio greater than 1," and that they would hand materials off to the town. Staff advised the board that, given statewide competition and program priorities, the culvert project might not be as competitive as broader floodplain restoration projects.

Board members asked whether to pursue other funding sources now; staff suggested that if the town wanted to move faster, the project could be submitted for clean‑water or other grant rounds and that River staff could help coordinate that work.

The town agreed to keep the Barker Road culvert on the table and to receive the technical materials from staff for further consideration.