1. How is the baseline archive established?
A baseline digital archive is established through the first intelligent inspection: completing bridge 3D modeling, collecting the full-bridge defect inventory and entering structural information, forming the bridge’s digital “initial state” as the baseline for all subsequent comparisons and decisions.
2. Year-by-year iteration mechanism
After the baseline archive is established, annual routine inspection data continues to merge; defect changes and maintenance records are updated year by year, and the digital archive iterates and improves continuously, gradually accumulating complete full-lifecycle data.
3. Unique value for old bridges
Old bridges without historical data need digital archiving even more: the first inspection can clarify structural inventory and existing defect stock, providing a reliable baseline for subsequent maintenance and periodic inspection, avoiding the management dilemma of “no basis to rely on.”
4. Applicable conditions and scenarios
- Existing bridges without historical digital materials
- Bridges with long service life and higher defect risk
- Owner organizations needing to build maintenance ledgers from scratch
5. Notes
Baseline archiving is recommended to use full-element inspection including the under-bridge area to ensure complete initial data and lay a reliable foundation for subsequent annual comparisons.