Data Source and Calculation
VDOT's Structure and Bridge Division (SBD) uses a comprehensive bridge management system as a tool to assist with bridge management. The VDOT Data Warehouse stores structure condition information and receives regular updates from the bridge management system. The VDOT Dashboard presents structure condition information to the public by identifying structures deemed structurally deficient, and the Data Warehouse provides regular updates to Dashboard.
The result for this measure is taken from Dashboard and expresses the number of structures not deemed structurally deficient as a percentage of the population, at a given point in time. Results will change over time as the condition of structures improves or declines, and as the population of structures changes.