In south-central New Hampshire, regional planners used the 3I (three infrastructures) approach to simultaneously plan for the I-93 Corridor's built, green, and social infrastructures.
The “three infrastructures” approach to municipal land-use planning helps towns think consciously about the interactions between their built, green, and social infrastructures so that they may identify the most appropriate places for development.
By combining local knowledge with innovative mapping and implementation tools, the 3i Solutions process in New Hampshire assisted towns with shaping growth while sustaining natural services and community character.
The process involved mapping the three infrastructures, evaluating conflicts between existing land use regulations and community vision, developing alternate CommunityViz scenarios, and recommending regulations and incentives to support the community’s vision for the future.
The 3I team began by working with a group of local leaders to review and revise draft maps of built and green infrastructures, and identify elements of social infrastructure for mapping.
Next, the team used public meetings and surveys to capture public opinion about existing conditions of the three infrastructures, as well as desired future conditions. This provided the basis for developing CommunityViz scenarios to illustrate alternative patterns of growth.
Citizens and town officials then reviewed the scenarios and identified the one that best reflected community goals. This scenario provided the baseline for a regulatory audit of existing land use regulations. The audit identified existing regulations that support and conflict with identified goals, and provided model language for supportive regulations and voluntary practices that the towns may choose to adopt.
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