Highway Performance Measures for Business Plans in Alberta

摘要

A core business in the Alberta Infrastructure and Transportation business plan [1]rn is torn“Plan, develop and manage government-owned infrastructure”. A goal under thisrncore business is to “Improve the safety, efficiency and effectiveness of provincialrnhighway infrastructure”. This links to Government Goal 14: "Alberta will have arnsupportive and sustainable infrastructure that promotes growth and enhancesrnquality of life" [2] rn.rnThe performance measures used for the department goal relate to physicalrncondition, functional adequacy and utilization. Condition is recorded as % Good,rn% Fair and % Poor. It is based on International Roughness Index measurementsrn(IRI). Functional Adequacy is recorded as % Functionally Adequate. This isrncalculated by subtracting deficiencies from 100 %. Deficiencies are based onrnroadway width, geometrics, surface type and weight restrictions. Utilization isrnrecorded as % Meeting Targets. It is based on capacity (LOS).rnActual results are calculated annually and displayed in the department annualrnreport. Predicted three-year results are shown in the department business planrnand are based on anticipated budgets. These predicted results showrndeterioration. Budget levels necessary to prevent this are given. A dollar valuernis also shown for the deferred maintenance backlog presently in effect.rnThis paper concentrates on the condition and functional adequacy performancernmeasures used at the business plan level for the Alberta provincial highwayrnnetwork, along with accompanying trends, as these two measures drive thernmajority of work on the existing highway network. The paper describes thernhealth of the highway infrastructure in Alberta, how that health is changing overrntime and the dollar values required to maintain and improve that health.