According to the city's report, residents repeatedly reported potholes, sidewalk caving, soil erosion, settlement and other problems along the area in question. Both the city and CSX responded by sending inspectors and making piecemeal repairs. None of the inspections were conducted by structural or geotechnical engineers, no engineering study was performed on the wall or sidewalk, and "no definitive determination" of why the problems were occurring was made. The city had decided before the collapse that a more extensive rehabilitation project was needed, but the $350,000 price tag for what it approved indicates just how far off officials were about the true nature of what was going wrong. Post-collapse, the cost for rebuilding the wall is expected to be about $15 million.