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• • • Indian River County 1 Impact Fee Update Study Design County Roadways The design cost factor for county roads was estimated as a percentage of the construction cost per lane mile. This factor was determined through a•. review of the design -to - construction cost ratios for county road unit costs in previously completed impact fee studies throughout Florida. For county roadways, the design factors ranged from 6 percent to 14 percent, with a weighted average of 10 percent. For purposes of this update study, the design cost for county roads was calculated at 10 percent of the construction cost per lane mile (see Table C-10 for additional information) aa. State Roadways Design Cost Adjustment — County Roads Road TypeDesign Design Cost per Lane Mile' Section Design Distribution(�1 Weighted Cost per Lane Mile �31 Urban Design $180,000 NS, 34% $61,000 Rural Design $149,000 _ ,66% $98,000 Weighted Average Design Cost per Lane Mile $159,000 1) Design cost*is>estimated at 10% ofconstructio o tkbased on recent TIF studies in Table Cd(Item a)5 r (2) SourceAppendix C, TableC-17 (Itemsnd' >czad) (3) Design cost 'per lane m le (Item 1) mule plied by the associated section design weight (Ite) for eaeh*design type andded together. The designcost factor for state roads was estimated as a percentage of the construction _:.. t cost per lane;mile. This factor was determined through a review of the design -to - construction costratios for state road unit costs in previously completed impact fee studies throughout Florida. For stateroadways, the design factors ranged from 10 percent to 14 percent, with a weightedaverage of 11 percent. For purposes of this update study, the design cost for state roads was calculated at 11 percent of the construction cost per lane mile. See Table C-10 for additional information. Tindale -Oliver & Associates, Inc. Indian River County January 2014 C-2 Impact Fee Update Study