National Bridge Inventory Element Data

The National Bridge Inventory Elements dataset is as of June 20, 2025 from the Federal Highway Administration (FHWA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). The data describes more than 620,000 of the Nation's bridges located on public roads, including Interstate Highways, U.S. highways, State and county roads, as well as publicly-accessible bridges on Federal and Tribal lands. The element data present a breakdown of the condition of each structural and bridge management element for each bridge on the National Highway System (NHS). The Specification for the National Bridge Inventory Bridge Elements contains a detailed description of each data element including coding instructions and attribute definitions. The Coding Guide is available at: https://doi.org/10.21949/1519106. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/1519106

国家桥梁库存元素数据集（National Bridge Inventory Elements Dataset）的信息截至2025年6月20日，由美国联邦公路管理局（Federal Highway Administration, FHWA）发布，隶属于美国运输部（U.S. Department of Transportation, USDOT）/运输统计局（Bureau of Transportation Statistics, BTS）下属的国家交通地图集数据库（National Transportation Atlas Database, NTAD）。
该数据集涵盖全美62万余座公共道路桥梁，包括州际公路、美国国道、州级与县级道路上的桥梁，以及联邦和印第安部落土地上对公众开放的桥梁。
此元素数据针对国家公路系统（National Highway System, NHS）内的每座桥梁，对其各结构与桥梁管理元素的技术状况进行了分项拆解与说明。
《国家桥梁库存桥梁元素规范》（Specification for the National Bridge Inventory Bridge Elements）对每项数据元素均给出了详细说明，包括编码规则与属性定义。
编码指南可通过以下链接获取：https://doi.org/10.21949/1519106。数据字典或其他属性信息来源亦可通过该链接访问：https://doi.org/10.21949/1519106。