What It Means
ADT is estimated from traffic counts and represents the total number of vehicles (including cars, trucks, and buses) that cross a bridge in an average 24-hour period. High-ADT bridges serve critical transportation corridors and receive higher priority for maintenance and repair. ADT data helps transportation agencies allocate limited funding to bridges that serve the most people.
Frequently Asked Questions
What does "Average Daily Traffic (ADT)" mean?
The average number of vehicles crossing a bridge per day, used to assess usage and prioritize maintenance.
Why does Average Daily Traffic (ADT) matter for bridge safety?
ADT is estimated from traffic counts and represents the total number of vehicles (including cars, trucks, and buses) that cross a bridge in an average 24-hour period. High-ADT bridges serve critical transportation corridors and receive higher priority for maintenance and repair. ADT data helps trans...