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The inspection method is a method of solving non-exact differential equations. This method solves the non-exact differential equation without converting it into an exact differential equation.

Sounding the surface by striking it with a hammer is one of the oldest and most commonly used inspection methods. Although sounding is widely used, interpretation is VERY subjective. Practical experience has shown that sounding is only useful for members less than 4 inches thick.

Visual inspection. This is the most common type of inspection. It simply involves looking over the structure with the naked eye or using tools, like bridge lifts or drones with cameras, to safely bring hard-to-access areas within view.

Level 1 inspections determine the bridge's general condition, while Level 2 inspections look for potential safety issues. If there are any major safety concerns found during a Level 2 inspection, the bridge will need to undergo a Level 3 inspection.

Evaluates the condition of various bridge elements and makes on-site judgments regarding the potential for adverse effects on the traveling public. Maintains logs, progress reports or other documentation regarding condition of various bridge components.

Sight, sound, and touch: the fundamental inspection tools ing to Jason, more than 99% of inspection techniques are visual, auditory, or tactile. A geologist hammer and a simple rotary impact tool are used to test bridges.