sweetapricity/bridgedeck-salt

该数据集名为Bridgedeck — Road Salt Exposure (USGS)，是bridgedeck数据集集合的一部分，专注于美国桥面恶化研究。它提供了美国50个州和哥伦比亚特区的道路盐（除冰盐）层级分类，数据来源于美国地质调查局（USGS）对美国本土道路盐应用的估计（1992-2019年）。道路盐是桥面恶化预测模型（如XGBoost模型）中的最强预测因子，因为氯化物会渗透混凝土并加速钢筋腐蚀。数据集包含51行数据（每州一行），列包括：state_code（2位FIPS州代码，如48代表德克萨斯州）、salt_tier（盐层级，1=重度、2=中度、3=轻度）和salt_proportion（盐使用相对比例，0.9表示重度、0.4表示中度、0.1表示轻度）。数据是静态的，反映长期平均模式，且为州级聚合，未考虑州内空间变异。该数据集可作为轻量级代理变量，用于桥梁维护和基础设施研究中的盐暴露分析。The dataset is named Bridgedeck — Road Salt Exposure (USGS), part of the bridgedeck collection for US bridge deck deterioration research. It provides state-level road salt (deicing salt) tier classification for all 50 US states and the District of Columbia, derived from USGS estimates of road salt application across the conterminous United States (1992–2019). Road salt is the strongest predictor of bridge deck deterioration in models like XGBoost, as chloride penetrates concrete and accelerates rebar corrosion. The dataset contains 51 rows (one per state), with columns: state_code (2-digit FIPS state code, e.g., 48 for Texas), salt_tier (tier 1=Heavy, 2=Moderate, 3=Minimal), and salt_proportion (relative salt use: 0.9 for heavy, 0.4 for moderate, 0.1 for minimal). It is static, reflecting long-term average patterns, and aggregated at the state level without capturing within-state variation. This dataset serves as a lightweight proxy for salt exposure analysis in bridge maintenance and infrastructure studies.