NBI Library
Regulation
Policy
- Non-Destructive Testing of Fracture Critical Members Fabricated from AASHTO M244 Grade100 (ASTM A514/A517) Steel (12/13/2021)
- Revisions to the Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation's Bridges (Coding Guide) Items 63 and 65, Method Used to Determine Operating and Inventory Rating (11/15/2011)
- Revisions to the Recording and Coding Guide for the Structure, Inventory and Appraisal of the Nation's Bridges (Coding Guide) - Item 31, Design Load, and Items 63 and 65, Method Used to Determine Operating and Inventory Ratings (02/02/2011)
- Public Disclosure of National Bridge Inventory (NBI) Data (05/17/2007)
- Revision of Coding Guide, Item 113 - Scour Critical Bridges (04/27/2001)
- Agreement for the Implementation of Scour Countermeasures to Protect Foundations of Scour Critical Bridges (02/11/1997)
- Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation's Bridges (12/11/1995)
- Federal Bridges in the National Bridge Inventory (01/04/1995)
- New and Major Reconstruction of Bridges - 10 Year Rule (05/06/1985)
Guidance
- Implementation of the Specifications for the National Bridge Inventory (05/25/2022)
- Interim Guidance for Implementing FAST Act Section 1439: Elimination of Barriers to Improve At-Risk Bridges (08/16/2016)
- Revision to December 16, 2013, Memorandum on Specification for the National Bridge Inventory Bridge Elements (SNBIBE) (07/25/2014)
- Specification for the National Bridge Inventory Bridge Elements (SNBIBE) Frequently Asked Questions and Answers (07/25/2014)
- MAP-21: Guidance for the Collection of Element Level Data for National Highway System Bridges (03/12/2013)
- Financial Management Information System (FMIS) New and Updated Improvement Type Codes for Bridges, Tunnels and Other Assets (09/27/2012)
- Inspection of Gusset Plates Using Non-Destructive Evaluation Technologies (T 5140.31) (01/29/2010)
- Load-carrying Capacity Considerations of Gusset Plates in Non-load-path-redundant Steel Truss Bridges (T 5140.29) (01/15/2008)
- Bridge Load Ratings for the National Bridge Inventory (10/30/2006)
- Evaluating Scour at Bridges (T 5140.23) (10/28/1991)
Information
- Evaluation of Steel Bridge Details for Susceptibility to Constraint-Induced Fracture (November 29, 2021)
- MAP-21 Questions & Answers: Bridge (10/09/2013)
- Updated National Highway System Maps (09/28/2012)
- MAP-21 Fact Sheet: National Bridge and Tunnel Inventory and Inspection Standards (2012)
- Standards for Counties and Equivalent Entities - FIPS Codes (05/10/2002)
- Frequently Requested NBI Tables