8.1 SR 11-21-2022 - Laserfiche WebLink

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Individual Criteria Scorine Methodol Return on Investment. The law states the first criteria is a return on investment (ROI) measure that provides for comparison across eligible projects. MnDOT will incorporate the Project Effectiveness analysis from the FHWA Highway Capacity manual as the basis for determining ROI outputs. There are essentially two outputs as a part of this analysis: Travel Time Savings and 5-year Crash Reduction Savings. Travel Time Savings are calculated by first determining what the current travel times are along the roadway (MnDOT will be using one of two available travel time data sets which incorporates cell phone and GPS data). Next, future travel times are calculated based upon the recommended project being constructed. There are two factors which can impact future travel times on the corridor, increases in the capacity of the roadway and increases in the posted speed limit resulting from the improvement. Combined, these savings represent the total travel time savings. The total savings is then divided by the cost of the project to the Corridors of Commerce Program to determine a Return on Investment output for travel time. Please note the cost used to determine the ROI is the cost to the corridors of commerce program and not the total cost of the project. As an example, if a project's total cost was $100 M but the submitter was only asking for $50 M from the program because the other $50 M is covered from other sources, the travel time savings would be divided by $50 M and not $100 M. This is also true for the 5-year Crash Reduction Savings below. 5-Year Crash Reduction Savings are calculated by first determining the type and severity of crashes at the proposed project locations for the last five years using MnDOT's crash data. Using FHWA's Crash Modification Factors, it is possible to project the amount of reduction in crashes a particular type of improvement can be expected to generate. For example, if there are 100 specific type of crashes in the project area and the modification factor projects the project will result in a 50% savings in those crashes, the project will result in savings of 50 of those particular crashes. The number of crash savings by each type is then multiplied by the individual crash cost to produce a Total Crash Savings from the improvement. The total savings is then divided by the cost of the project to the Corridors of Commerce Program to determine a Return on Investment output for 5-Year Crash Savings. Economic Competitiveness. The law states that the project must produce a measurable impact on commerce and economic competitiveness. MnDOT purchased the Regional Input -Output Modeling System (RIMS -II) data set for each MnDOT district. That data set summarizes a multiplier of the Number of Jobs per Million dollars of investment factor for each of the eight MnDOT Districts. To determine the output for the criteria, the total cost of the project (not the cost to the corridors of commerce program) is multiplied by the respective multiplier factor in Table 1.