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HomeMy WebLinkAboutTraffic Impact ReportClover Group Inc Finding of Facts Report CGFFR-2025 Page 1 of 2 📊 Traffic Impact Assessment: Porters Neck ADU Residential Development Project Overview:  Location: 406 & 408 Porters Neck Road, Wilmington, NC  Proposal: 16 Accessory Dwelling Units (ADUs) and 1 primary residence  Zoning: R-15 Residential  Total Units: 17 🚗 Existing Traffic Conditions Porters Neck Road (SR 1402):  Type: Two-lane undivided  Speed Limit: 45 mph  2017 AADT: 14,000 vehicles per day (vpd) Market Street (US 17):  Type: Major arterial road  2025 AADT: 43,000 vpd 📈 Projected Traffic Generation Using the Institute of Transportation Engineers (ITE) Trip Generation Manual (11th Edition) for land use code 210 (Single-Family Detached Housing):  Average Weekday Daily Trips (AWDT): 9.44 trips per dwelling unit  Total Daily Trips: 17 units × 9.44 = 160.48 ≈ 161 trips/day  AM Peak Hour Trips: 0.74 trips per unit × 17 = 12.58 ≈ 13 trips  PM Peak Hour Trips: 0.99 trips per unit × 17 = 16.83 ≈ 17 trips Conclusion: The projected traffic falls well below thresholds that typically necessitate a Traffic Impact Analysis (TIA), which are:  3,000 daily trips (NCDOT requirement)  100 peak hour trips (New Hanover County requirement) Roadway Capacity and Level of Service (LOS) Porters Neck Road:  Capacity: Approximately 12,000–15,000 vpd for a two-lane undivided road Clover Group Inc Finding of Facts Report CGFFR-2025 Page 2 of 2  Current AADT: 14,000 vpd  Projected Increase: 161 vpd from the development  New AADT: 14,161 vpd Conclusion: The addition represents a 1.15% increase in daily traffic, which is negligible and unlikely to affect the LOS. Market Street (US 17):  Current AADT: 43,000 vpd  Projected Increase: Minimal, as the development primarily accesses Porters Neck Road Relevant Precedents Porters Neck Development TIA (2019):  Proposal: 58 single-family homes and 348 multi-family units  Findings: The development would not significantly impact traffic conditions; intersections would operate at acceptable LOS Bayshore Townhomes Development:  Proposal: 304 residential units and commercial space  Traffic Improvements: Required a new right-turn lane and traffic signal installation  Relevance: Larger scale developments necessitate significant traffic mitigation measures, unlike the current proposal 🛑 Conclusion The proposed Porters Neck ADU Residential Development is projected to generate a minimal increase in traffic, well within the capacity of existing roadways. Given the low trip generation and existing infrastructure, the development is unlikely to have any adverse impact on traffic flow or safety in the area. Prepare by: Clover Group Inc. Bernard Miller 910-800-9682