National Bridge Inventory -- Citizen Connect

The National Bridge Inventory (NBI) is a collection of information (database) describing the more than 615,000 of the Nation's bridges located on public roads as of...国家桥梁信息库（National Bridge Inventory, NBI）是一套信息集合（数据库），用于记录截至指定统计节点，美国公共道路上的逾61.5万座桥梁的相关信息。