The NBIS Compliance Metrics widgets were derived from metrics 6-10 of the FHWA NBIS Oversight Program “Metrics for the Oversight of the National Bridge Inspection Program” document from April 1, 2013. Consult the aforementioned document for an in depth explanation of the metrics behind the NBIS Compliance widgets.

All of the NBIS Compliance Metrics widgets will show bridges as late if they meet one of these two conditions:

1. The inspection was done in the last 12 months and it was late.
   • -OR-
2. The inspection is late.

Therefore, more than just currently overdue bridges will appear on the widget. A bridge that appears in the widget may have already been inspected within the last 12 months but the inspection was overdue when performed.

To view the specific bridges that make up the totals for "More than 4 Months Overdue," "2-4 Months Overdue," "1 Month Overdue," and "Met Requirement," click on the desired link and a popup list will appear.

• NBIS Compliance – Fracture Critical – displays bridges that have FCMs, are open to traffic, and whose inspection dates have changed since the previous year’s State NBI submission or whose inspections are overdue. Only assets that meet the requirements for FHWA reporting will be factored into this table.
  
• NBIS Compliance – Routine – Higher Risk – displays higher risk bridges that are open to traffic and whose inspection dates have changed since the previous year’s State NBI submission or whose inspections are overdue. Only assets that meet the requirements for FHWA reporting will be factored into this table.
  
• NBIS Compliance – Routine – Lower Risk – displays lower risk bridges that are open to traffic and whose inspection dates have changed since the previous year’s State NBI submission or whose inspections are overdue. Only assets that meet the requirements for FHWA reporting will be factored into this table.
  
• NBIS Compliance – Underwater – Higher Risk – displays higher risk bridges that require UW inspections, are open to traffic, and whose inspection dates have changed since the previous year’s State NBI submission or whose inspections are overdue. Only assets that meet the requirements for FHWA reporting will be factored into this table.
  
• NBIS Compliance – Underwater – Lower Risk – displays lower risk bridges that require UW inspections, are open to traffic, and whose inspection dates have changed since the previous year’s State NBI submission or whose inspections are overdue. Only assets that meet the requirements for FHWA reporting will be factored into this table.