CCP 01-22-2006 Work Session - Laserfiche WebLink

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. 2006 PM P Update I! I X/2007 Page l Good Pointc Analvsis GoodPointe Technology utilized the current pavement condition index (PCI) infl.mnation as well our historical data of street improvement projects to pcrfi.lIln pavemellt management analysis of the street system in Arden Hills. The budget analysis is based 011 current wnstruction costs and tirctors in an inflation rate of~(~/;'. Engineering costs. 200" of the estimated construction cost, have becn incorporated into the unit costs. It should be noted. however. that the analysis is only an estimate. and does not include any utility (watermain. sanitary sewer or stonn sewer) construction costs. easement acquisition costs. or trail/sidewalk construction costs. Also not included are additional costs that may be incurred !l.lr retaining walls, excessive driveway replacemcnt. right-of.way reestablishment or other costs fl.)J- arcas that may have extreme situations such as signiticant grade changes. The reason !I:)r this is that these wsts vary from project to project and there is no reliable way to estirnate them. Th~ ma~ntenance slt&te~ used by G~)odP()in~)r this analysis is b:lsed on categorizing the PCI rat1l1gs mto adeqllate.~'6-1 (0), margmaJ (31..:> _ . and poor (0-30). Streets that arc adequate rcceive seal coats. marginal streets receive a mill and overlay, and poor streets arc reconstructed. The type of mill and overlay used in the analysis is a 2"" mill on'!" the entire pavement section. Streets that have PCI values bordering two categories would be indi\idually evaluated to ensure . that the most cost-effective maintenance will occur (l.)r the condition ol"the street. ^ city street map has been included in this repol1 with the existing PC.J ratings color coded to the above mentioned categories. Staff askl:d CioodPnintc to evaluate t.he f()l1ovv'liiil t(.Hif budilcl scenarios: ..... .... Sccnario I is budget drivcn. designed to project the average pavcment condition if S I million is spent each year on street improvements fl.)r till' next 20 years. The existing 5-year CIP has been incorporated into the tirst live years of this model. Over the 20 year JKliod. the average PCI would increase from ()4 to 77. Sccnario 2 is designed based on the current average PCI {(14) and project the level of funding needed to maintain this over the next 20 years. In a budget model that is driven by a benchmark PCl, predetermined projects cannot he entered. The streets are selected by the program ll:)r rnaintenance on a needs basis. The results of this scenario indicate that approximately $14.5 mi II ion wi II need to be budgeted 11:11' pavemcnt management ovcr the !lex t 20 years. Scenario 3 is based on the desire to increase the average PCI hI 75 and determine thc kvcl of funding needed to achieve this over the next 20 years. i\ PCl value of 75 is an average benchmark among several other cities in the metro area. Again. this model does not allow for predetermined projects. and the program has selected streets on a needs basis. The results orthis scenario indicate that approximately $16 million will need to he budgeted fl.lr pavement . managemcnt over the next 20 years.