What It Means
Every bridge in the NBI has a unique structure number assigned by the state highway agency that owns or maintains it. The format varies by state but typically includes state and county codes followed by a sequential number. Structure numbers are permanent identifiers used throughout the bridge's life for tracking inspections, maintenance, and repairs. They allow precise identification even when bridge names or road designations change.
Frequently Asked Questions
What does "Structure Number" mean?
A unique identifier assigned to each bridge in the National Bridge Inventory by the owning state or agency.
Why does Structure Number matter for bridge safety?
Every bridge in the NBI has a unique structure number assigned by the state highway agency that owns or maintains it. The format varies by state but typically includes state and county codes followed by a sequential number. Structure numbers are permanent identifiers used throughout the bridge's lif...