Data Source and Calculation
VDOT's Structure and Bridge Division (SBD) uses PONTIS, a comprehensive bridge management system developed by the American Association of State Highway and Transportation Officials (AASHTO), as a tool to assist with bridge management. The VDOT Data Warehouse stores structure condition information, and PONTIS provides regular updates to the Data Warehouse. 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 statewide 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 improve or decline, and as the population of structures changes. As information, the name “PONTIS” is derived from the Latin word for "bridge".