NBI (NHS Only) 2020 Bridge Condition Ratings

Bridge condition ratings are based on a 0-9 scale and assigned for each culvert, or the deck, superstructure and substructure of each bridge. These ratings are recorded in the National Bridge Inventory (NBI) database. This dataset only includes data from the NBI database that in on the National Highway System (NHS). Condition ratings are an important tool for transportation asset management, as they are used to identify preventative maintenance needs, and to determine rehabilitation and replacement projects that require funding. Data from 7/7/2020桥梁状态评级基于0-9分级标准，针对每座涵洞，或是每座桥梁的桥面、上部结构与下部结构分别赋值。此类评级数据被收录于国家桥梁清单（National Bridge Inventory, NBI）数据库中。本数据集仅包含隶属于国家公路系统（National Highway System, NHS）的NBI数据库数据。状态评级是交通资产管理的重要工具，可用于识别预防性养护需求，并确定需要资金支持的修复与更换工程项目。数据采集时间：2020年7月7日