Conversion methodology
Applies to single records and batch runs alikeSome municipal UDI definitions count distress upward. Pick the wrong direction and every result inverts, so confirm this against your data dictionary before a batch run.
Segment input
Unlimited single-record conversions. No account, no quota.
Conversion result
- Input UDI
- —
- Effective UDI
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- Δ vs other method
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Recommended maintenance strategy
Derivation
Batch processing is part of the Professional tier
Single-record conversion stays free and unlimited. Activate the simulated subscription above to upload a CSV, convert up to 10,000 segments at once, and export the results.
Upload survey file
Drop a CSV here, or
headers: segment_id, udi · max 10,000 rows
segment_id,udi RUH-KA-0412,72.4 RUH-KA-0413,41.0 RUH-OL-1180,93.2
Column order is detected from the header row. A file without a header is read as ID, UDI.
- Records processed
- 0
- Rows rejected
- 0
- Average PCI
- —
- Network median
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- Below PCI 55
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Condition distribution
Share of converted segments by PCI bracketRejected rows
These rows were excluded from the results and the export. Fix them in the source file and re-upload.
Results preview
| # | Segment ID | Input UDI | Converted PCI | Category | Strategy |
|---|
Method notes and limitations
Control points (Option A)
| UDI | PCI | Bracket |
|---|
Default coefficients (Option B)
a = −5.91, b = 1.015 are a least-squares fit through the six Option A control points, not a field calibration. They reproduce the banded curve to within about 11 PCI points at the low end and under 4 points above PCI 55. Replace them with coefficients from paired UDI/PCI survey data before using Option B for programming decisions.
What this tool is not
There is no published standard that converts UDI to PCI. UDI definitions differ by municipality in both distress set and weighting, so a converted PCI is an estimate for screening and budget scenarios, not a substitute for an ASTM D6433 survey. Verify the bracket table against your own UDI specification before adopting it.
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