Admin Order 58-01-11-F - Laserfiche WebLink

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Anoth r basic assumption of the transportation SDC is that the rates assigned to each use classifi ation include all related functions for that type of development. Where the develo ment includes mixed land uses which are independent activities, as distinguished from a ciliary or supporting uses, a composite development charge will be calculated for each I, use. I!, 1.3 rterial and Collector Street Cost Analysis ~i The c st figure for street construction is a key factor in the equation by which the transp rtation portion of systems development charge is calculated. This discussion outlines the m thodology and assumptions- used to calculate a unit cost used in the systems develo ment charge equation. The c st of a lane mile of arterial or collector street is derived from several components: • t e basic construction cost of a linear section street • t e cost of intersections • t e cost of bridges or other structures • t e cost of traffic signals, and • t e cost of street lights Figure 2 illustrates the method for calculating the arterial and collector street components of the tra sportation SDC. 1 3.1 Linear Section Construction Costs he two typical sections developed for this analysis are based upon standard e gineering practices, City policy, and policies included in the most recent Council- a opted, long-range transportation plan for the Eugene-Springfield area. e supporting data and detailed analysis for typical arterial and collector sections used i this methodology can be found in Table 3 of this Appendix. The supporting data i cludes estimated construction costs per lineal foot and linear mile for typical arterial a d collectors including engineering and administrative costs, the average number of I nes per mile of arterial and collector section, and the average assessable and non- a sessable cost per linear foot, per linear mile, and per lane mile. 1 3.2 Intersection Construction Costs e importance of intersections as a component in the arterial and collector street cost c Iculation comes from costs which are higher than a linear section of street and from t e City's long standing policy not to assess costs for intersections to adjacent property. he cost calculations for typical street intersections were based on the lineal foot unit f r different street widths and typical right-of-way widths for local and collector/arterial s reets. Based on the average number of intersections per mile, the intersection cost p r lane mile ofarterial/collector streets including administration and engineering costs c n be estimated. ote that the average number of intersections does not include the downtown grid. It as judged unlikely that the dense grid system of streets in downtown Eugene would b repeated elsewhere and thus avoids the potential for overestimating the number of i tersections per mile. City of Eu ene SDC Methodology Transportation, Page B- 3