US National Bridge Inventory

美国国家桥梁库存(National Bridge Inventory, NBI)是一个关于美国桥梁基础设施的综合性数据库，记录了全国桥梁的结构状况、评估数据和管理信息。该数据库采用结构清单和评估指南以及国家桥梁库存规范(SNBI)作为数据标准，为桥梁管理和保护提供支持。数据由各机构向联邦公路管理局(FHWA)提交，用于桥梁维护和资金规划决策。

The National Bridge Inventory (NBI) is a comprehensive database focusing on U.S. bridge infrastructure, which records structural conditions, assessment data and management information of all bridges across the country. It adopts structural inventory and assessment guidelines, together with the Standard for National Bridge Inventory (SNBI), as its data standards to support bridge management and preservation efforts. Data is submitted to the Federal Highway Administration (FHWA) by relevant agencies, and is utilized for decision-making in bridge maintenance and funding planning.