concrete issues on sidewalk and stoop
My house was built in 1993, it has concrete stairs that lead to a short sidewalk to a stoop that provides access to front door, the foundation of stoop is brick. There seems to be some possibly serious deterioration that concerns me. The brick has become very brittle in spots, (if you touch it it crumbles apart in hand and the side walk has some issues, which I fear can result in a complete broke sidewalk or possible personal injury. In the middle of the sidewalk it is like all the earth eroded away so there is nothing supporting it, just open air underneath, and besides the brick being brittle it is bubbling out in spots, pics are attached, any help would be much appreciated. basically I just want to know if its fine and I should leave it alone, or can I repair it, or does the whole thing need replaced. Biggest concern is personal injury if sidewalk collapses or when I go to sell house in the future it looks bad. Thanks in advance for any help.