The average life of concrete sidewalks is 20 to 40 years, but failure can occur as early as one to five years after construction. Many of the problems are the result of lack of attention to detail during the design and installation. Four key sidewalk attributes are: safety, comfort, appearance, and life-cycle cost performance.
Due to Colorado's freeze/thaw cylces sidewalks can heave or break causing a triping hazard. Don't put yourself at risk of litigation, repair you sidewalks!