CDOT Performance Data Business Plan - Cambridge Systematics

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CDOT Performance Data Business Plan Unit of Measure: Grade Calculation: 1. Calculate the deck area of each structure as follows: 2. Determine which bridges are “good or fair” using the criteria described above. 3. Calculate percent good or fair as follows: ∑ ∑ 100 4. Convert result to a letter grade using the thresholds defined above. Update Frequency: Annual (Data are collected biannually for each bridge. However, the inspections are performed on a rolling basis, so it is recommended that the measure be reported annually.) Additional Notes: The criteria for defining good/fair/poor are based on national standards used to determine eligibility for Federal bridge funds. Bridges in poor condition are eligible for Federal reconstruction funds. Bridges in fair condition are eligible for Federal rehabilitation funds. Bridges in good condition are not eligible for Federal funds. Sufficiency rating is reported on a scale of one to one hundred. It is based on condition data and bridge characteristics related to serviceability and essentiality for public use. Structurally deficient (SD) status indicates that a bridge has a significant condition defect. Functionally obsolete (FO) status indicates a design issue, such as insufficient shoulder width. All three metrics are based on data collected biannually. 3. Pavement Condition Existing Measure: The percent of miles of pavement that are classified as “good” or “fair” based on remaining service life (RSL) is currently tracked and reported by CDOT. RSL thresholds are as follows: Poor – RSL < 6 Fair – 6 ≤ RSL ≤ 10 Good – RSL ≥ 11 Recommendation: Recommended modification to this measure is to combine RSL with percent of miles of pavement classified as “good” or “fair” based on IRI (International Roughness Index), and then convert the result to a letter grade. The recommended IRI thresholds are as follows: Poor – IRI > 170 Fair – 95 ≤ IRI ≤ 170 Good – IRI < 95 3-10 Cambridge Systematics, Inc.
CDOT Performance Data Business Plan Letter grades are based on the following thresholds for percent good or fair: Grade Threshold A 90 – 100 B 80 – 89 C 70 – 79 D 60 – 69 F < 60 Current Value: 48% based on RSL Value Based on Recommendation: available.) Owner: Stephen Henry F (At time of this writing IRI data was not Required Data Item Source Owner Pavement segment identifier ADLP Pavement Design Unit Pavement segment region dTIMS Pavement Design Unit Pavement segment number of miles dTIMS Pavement Design Unit Pavement segment RSL ADLP Pavement Design Unit Pavement segment IRI Surface Condition Database Pavement Design Unit Unit of Measure: Grade Calculation: 1. Classify each segment as good, fair or poor using RSL thresholds defined above. 2. Calculate percent good or fair based on RSL as follows: ∑ good or fair based RSL ∑ 100 3. Classify each segment as good, fair or poor using IRI thresholds defined above. 4. Calculate percent good or fair based on IRI as follows: percent IRI ∑ M good or fair based IRI ∑ M 100 5. Combine the results of step 2 and step 4 as follows: 6. Convert percent total to a letter grade using the thresholds defined above. Update Frequency: Annual Cambridge Systematics, Inc. 3-11
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CDOT Performance Data Business Plan
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5.0 External Reporting Dashboard CD
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Figure 5.18 CDOT Dashboard Example
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Appendices A. Additional Data Colle
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Appendices Recognize and Plan
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Appendices Improved communication
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Appendices Planning Ext Planning In
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Appendices Person, Ron, Balanced Sc
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Appendices CDOT is required to rep
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Appendices How and when they ar
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Appendices If measures reported by
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Appendices INTEGRATE REGIONAL AND S
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Appendices Maintain or improve
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Appendices F. Sample Data Governanc
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Appendices G. Congestion The report
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Appendices Table G-1 Revised Segmen
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Appendices Results The following ta
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Appendices Figure G-1 Speed Eastbou
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Appendices Figure G-5 Speed Westbou
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Appendices A useful format for the
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Appendices Figure G-13 AM Peak PTI
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Appendices H. Calculation Spreadshe
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Appendices Cambridge Systematics, I
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CDOT Performance Data Business Plan - Cambridge Systematics

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