Our nation has one of the most extensive road systems in the world. We enjoy fast and unobstructed travel by personal vehicle from journey's beginning to end. A major factor in enabling such effectual commuting is our nation's bridges. Consider how often the average commuter passes over a bridge in any given daily commute. Such bridges may be massive steel goliaths or they may be smaller spans used for crossing a creek or ditch.
Much can go into building a modern 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 periodic analyzing and maintenance to ensure safety. National Bridge Inspection Standards mandate bridge inspections every other year. Due to the massive array of bridges in use, this becomes formidable undertaking.
Inspection teams survey a bridge's condition. They can spot small issues and overall structural integrity. An inspection often involves a variety of surveying tools and a bridge analysis truck.
Thanks to regular checks by NBIS compliant bridge inspectors US bridges are being attended to more efficiently. That kind of code compliant NBIS bridge maintenance means a safer drive for everyone.