National Bridge Inventory (NBI) – Based on the Coding Guide
![Screenshot: Cover of Recording and coding Guide for the Strucure Inventory and Appraisal of the Nation's Bridges](images/MTGUIDE_small.jpg)
- LTBP InfoBridge Web Portal (NBI data querying, analysis, and visualization tool. Google Chrome recommended.)
U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000