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CTAP Project Area  I-93 Community Technical Assistance Program

CTAP Project Area  I-93 Community Technical Assistance Program. Overview. Growth context Growth consequences How should we grow? The premise and promise of CTAP. I-93 Secondary Impacts Study. Population 40,626 additional population in 29 communities (35,314 in 23 NH communities)

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CTAP Project Area  I-93 Community Technical Assistance Program

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  1. CTAP Project Area  I-93 Community Technical Assistance Program

  2. Overview • Growth context • Growth consequences • How should we grow? • The premise and promise of CTAP

  3. I-93 Secondary Impacts Study Population • 40,626 additional population in 29 communities (35,314 in 23 NH communities) • 5% additional population overall • 7% in NH • 12% in smaller Towns (< 10,000 population) 26% 84%

  4. I-93 Secondary Impacts Study Employment • 21,527 additional jobs in 29 communities (15,952 in 23 NH communities) • 5.5% additional growth overall • 6.8% in NH • 13% in smaller Towns (< 10,000 population) 17% 83%

  5. I-93 Secondary Impacts Study Land Conversion • 20,223 additional acres in 29 communities (18,089 in 23 NH communities) • Larger increases in conversion in smaller towns (larger lot sizes) 27% 73%

  6. Growth Segment – Background vs. Secondary Secondary Growth: 39,231 Base Growth: 112,567 Projected Population in 2020: 557,687

  7. Summary – Secondary Impacts

  8. Population Growth in CTAP Communities

  9. Population Trends Census (1970-2000: 1.9%/yr.) OEP Projections (2000-2025: 1.1%/yr.) I-93 Induced Growth (2000-2020: 1.6%/yr.)

  10. Ex-Urban Population Growth - CTAP Communities 1940 2020 7X growth (168,112) 2X growth (96,303) Population: 141,474 Population: 405,889

  11. Land Use - 1962

  12. Land Use - 1974

  13. Land Use - 1998

  14. Land Consumption • Change in developed land, 1962 – 1998: • From 36,519 acres (7.9%) to 98,417 acres (21.2%) • Increase of 61,898 acres, or 13.3% of the county • Average of 1750 acres of conversion per year. • Average land ‘consumption’ per unit of development increasing Source: Forty Years of Land Use Change in Rockingham and Strafford Counties, Complex System Research Center and CICEET)

  15. Developed Road Frontage Miles of developed road frontage: Source: Forty Years of Land Use Change in Rockingham and Strafford Counties, Complex System Research Center and CICEET)

  16. Impervious Surface Total impervious area values above approximately 5% are associated with impaired water quality Source: Forty Years of Land Use Change in Rockingham and Strafford Counties, Complex System Research Center and CICEET)

  17. Traffic Growth Accelerates

  18. Land Use - 1962

  19. Land Use - 1998

  20. Implications of Existing Growth Pattern • Land consumption • Environment: air and water quality • Travel demand & congestion • Road infrastructure and maintenance • Energy consumption • Community design, character, ‘social capital’ • Public health & wellness

  21. Some Key Planning Principles for the Future • Concentrate development to conserve land, and to maximize use/efficiency of infrastructure • Prevent or limit development in areas with high conservation value, and link those areas in regional networks • Move toward multi-density zoning model (rural towns), (Villages & town, mixed use centers/Conservation Zones/Density transfers) • Build on brownfields, not greenfields • Utilize minimum impact development techniques and green building design • Preserve historic buildings and other cultural and community assets • Balance job growth with housing supply • Encourage development that can be efficiently served by pedestrian, bicycle and transit

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