Sidewalk polygons Cape Cod 2025

Overview This feature service provides detailed geospatial data on sidewalks located in Cape Cod, Massachusetts. It represents an inventory of sidewalk polygons along streets and public areas obtained from high-resolution aerial imagery captured in Spring 2025 under optimal conditions to ensure data accuracy and clarity. Feature Layer SidewalkPoly: This polygon layer documents sidewalks including their geographic extents and provides comprehensive attributes such as facility identifiers, pavement surface types (e.g., concrete, asphalt, brick paver). Additional information such as sidewalk width, installation dates, ownership, management, and last update details are included to support infrastructure management and maintenance planning. Geographic Coverage The dataset covers the Cape Cod region, offering precise spatial information for municipalities within this area, aiding local agencies and stakeholders in infrastructure assessment and urban planning. Use Cases Supporting public works departments in managing and maintaining sidewalk infrastructure. Assisting in ADA compliance audits and accessibility planning. Facilitating urban planning efforts and enhancing pedestrian safety programs. Enabling map-based analyses for condition assessment and asset management. Data Quality and Source The layer is derived from 7.5 cm resolution, four-band true color and near-infrared aerial imagery acquired between February and April 2025. The data adheres to stringent positional accuracy standards (NSSDA 0.38-meters at 95% confidence) suitable for detailed planimetric mapping.

概述 本要素服务提供美国马萨诸塞州科德角（Cape Cod）区域内人行道的详细地理空间数据。该数据集为2025年春季（2月至4月）在最优成像条件下采集的高分辨率航空影像解译所得的沿街及公共区域人行道多边形要素清单，以保障数据的准确性与清晰度。

要素图层：人行道多边形要素图层（SidewalkPoly）。本多边形图层记录了人行道的地理范围，并提供设施标识符、路面铺装类型（如混凝土、沥青、砖铺路面等）等全面属性信息。此外还包含人行道宽度、铺设日期、所有权、管理情况及最新更新详情等内容，可支撑基础设施管理与维护规划工作。

地理覆盖范围 本数据集覆盖科德角全域，为区域内各市政单位提供精准的空间信息，助力当地机构与利益相关方开展基础设施评估与城市规划工作。

应用场景 1. 支持公共工程部门开展人行道基础设施的管理与维护工作；2. 协助开展《美国残疾人法案》（Americans with Disabilities Act, ADA）合规性审计与无障碍规划；3. 助力城市规划工作，优化行人安全保障项目；4. 支持基于地图的状况评估与资产管理分析。

数据质量与数据源 本图层解译自2025年2月至4月采集的7.5厘米分辨率四波段真彩色及近红外航空影像。数据符合严格的位置精度标准（国家空间数据精度标准NSSDA：95%置信度下误差不超过0.38米），可满足高精度平面测图的需求。