The Alabama Department of Transportation (ALDOT) plays a vital role in ensuring the safety of the state’s bridges. ALDOT conducts thorough inspections to assess bridge conditions and makes sure they’re in good shape for drivers.
These inspections follow federal guidelines that outline rules for checking bridges on public roads. ALDOT also has the flexibility to add its own inspection programs to address any special needs that may arise.
When inspectors check a bridge, they take a close look at key parts like the deck (the surface you drive on), the supporting structure underneath and any culverts or drainage systems. They look for anything that could weaken the bridge, such as cracks or signs of wear. Depending on the bridge’s age, condition and traffic volume, inspections usually occur at least once every two years. However, some bridges are inspected more frequently.
Bridge inspections may seem routine, but they are critical. They help spot potential problems early and ensure that maintenance and repairs happen before issues become serious. The Federal Highway Administration (FHWA) oversees the Specifications for the National Bridge Inventory (SBNI) standards, which are updated periodically. The latest changes came in 2022 to include new technology and research.
Technology has made these inspections even more thorough. Drones, sensors, ground-penetrating radar and cameras help inspectors find issues that might not be visible during a basic visual and hands-on inspection. These tools also make it easier to keep track of changes over time, which means potential problems can be addressed sooner.
Bridge inspections typically require lane closures and can last a day or two. While these minor inconveniences may disrupt traffic, they’re essential for keeping everyone safe on Alabama’s bridges.
