| Bridge construction safety risk factors A | External factors B1 | Regulatory charters and other theoretical factors C1 |
| Construction program factors C2 | ||
| Foundation soil expansion C3 | ||
| natural factors C4 | ||
| Material process factors B2 | The quality of construction materials is not qualified C5 | |
| Material properties change C6 | ||
| Unreasonable construction process and technology C7 | ||
| Construction management factors B3 | Unfamiliar with drawing blind construction C8 | |
| Not according to plan construction C9 | ||
| Do not comply with relevant regulations C10 | ||
| Do not follow the relevant operating procedures C11 | ||
| Disturbance in construction management C12 | ||
| Technical factors B4 | Geological exploration factors C13 | |
| Lack of rational planning and design C14 | ||
| Lack of emphasis on safety C15 | ||
| Regulatory maintenance factors B5 | Completion without construction monitoring C16 | |
| Late maintenance is not in place C17 | ||
| Operational stage supervision is not in place C18 | ||
| Quality Warranty Insurance System C19 |