New Search
A basic assumption of-the transportation SDC is that development will generate the need for capital <br />improvements directly related to its size as measured for its classified use. The size of a <br />development is measured in the units identified in subparagraph 3.1.2 of this Appendix for the <br />development's classification as determined by the City's Traffic Engineer. <br />Another basic assumption of the transportation SDC is that the rates assigned to each use <br />classification include all related functions for that type of development. Where the <br />development includes mixed land uses which are independent activities, as distinguished <br />from ancillary or supporting uses, a composite development charge will be calculated for each <br />use. <br />1.3 Arterial and Collector Street Cost Analysis <br />The cost figure for street construction is a key factor in the equation by which the <br />transportation portion of systems development charge is calculated. This discussion outlines <br />the methodology and assumptions used to calculate a unit cost used in the systems <br />development charge equation. <br />The cost of a lane mile of arterial or collector street is derived from several components: <br />• the basic construction cost of a linear section street; <br />• the cost of intersections; <br />• the cost of bridges or other structures; <br />• the cost of traffic signals; and <br />• the cost of street lights. <br />Figure 2 illustrates the method for calculating the arterial and collector street components of <br />the transportation. SDC. <br />1.3.1 Linear Section Construction Costs <br />The two typical sections developed for this analysis are based upon standard <br />engineering practices, City policy, and policies included in the most recent Council- <br />adopted, long-range transportation plan for the Eugene-Springfield area. <br />The supporting data and detailed analysis for typical arterial and collector sections used <br />in this methodology can be found in Table 3 of this Appendix. The supporting data <br />includes estimated construction costs per lineal foot and linear mile for typical arterial <br />and collectors including engineering and administrative costs, the average number of <br />lanes per mile of arterial and collector section, and the average assessable and non- <br />assessable cost per linear foot, per linear mile, and per lane mile. <br />1.3.2 Intersection Construction Costs <br />The importance of intersections as a component in the arterial and collector street cost <br />calculation comes from costs which are higher than a linear section of street and from <br />the City's long standing policy not to assess costs for intersections to adjacent property. <br />~.. <br />t <br />City of Eugene SDC Methodology <br />Transportation, Page~B-3 <br />