The U.S. maintains one of the most large-scale road networks in the world. Residents enjoy fast and direct travel by personal vehicle from point A to point B. A considerable factor in facilitating such efficient commuting is our bridges. Consider how often the average person passes over a bridge in any given daily commute. These bridges may be massive steel giants or they may be smaller spans used for going over a creek or ditch.
A lot can go into building a bridge. Vast amounts of time and attention to detail is spent on specs. Many resources, both material and human, are used in the actual construction but, bridge work doesn't end there. Bridges require routine inspection and maintenance to ensure safety. NBIS guidelines for maintenance call for bridge inspections every 2 yrs. Due to the massive array of bridges in use, this becomes formidable task.
Inspectors survey a bridge's condition. They can spot maintenance needs and overall structural integrity. An inspector will usually have a variety of bridge analysis equipment as well as a surveying truck.
Due to routine analysis compliant with NBIS US bridges are being attended to more with more attention to safety. That kind of regulated NBIS maintenance means a safer drive for everyone.