Bridges & Structures

Tables of Frequently Requested NBI Information

The following links utilize bridge data submitted annually to FHWA by the States, Federal agencies, and Tribal governments, in accordance with the National Bridge Inspection Standards and the Recording and Coding Guide for the Structure Inventory and Appraisal of the Nations Bridges (.pdf). Each data set is submitted in the spring, and may be corrected or updated throughout the year. The data for all public bridges are considered final and are published on this website at the end of each calendar year.

• Download NBI ASCII files

• Bridges by Deck Structure Type
• Bridges by Wearing Surface
• Deficient Bridges by County
• Deficient Bridges by Functional Classification
• Deficient Bridges by Highway System
• Deficient Bridges by Owner
• Deficient Bridges by Posting Status
• Deficient Bridges by Superstructure Material
• Deficient Bridges by Superstructure Type
• Deficient Bridges by Year Built

• Bridge Replacement Unit Costs

Historical Data

• Annual Materials Report on New Bridge Construction and Bridge Rehabilitation
• Bridges by Year Built, Year Reconstructed and Material Type
• Bridge Mobility Performance Measures
• Bridges of Federal-Aid Highway and Non Federal-Aid Highway System

Definitions

• Deficiency (Structurally Deficient, SD, and Functionally Obsolete, FO) are defined in http://www.fhwa.dot.gov/bridge/0650dsup.cfm (Note: Bridges with a Year Built or Year Reconstructed within the past 10 years will not be assigned a deficient status.) Therefore, when we refer to the deficiency being calculated not using the 10-yr rule, the status will be calculated without taking into consideration the year built or the year reconstructed.
• A text definition of SD and FO can be found in the Bridge Conditions section of Chapter 3 of the latest "Status of the Nation's Highways, Bridges, and Transit: Conditions & Performance, Report to Congress" http://www.fhwa.dot.gov/policy/2010cpr/
• All codes for all items in the National Bridge Inventory can be found in the Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation's Bridges located at : http://www.fhwa.dot.gov/bridge/bripub.cfm
• Definition of the National Highway System (NHS) can be found at: http://www.fhwa.dot.gov/planning/national_highway_system/