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September 11, 2021 <br />Page 49 <br />Step 4: Assess Concept Effectiveness <br />The final step in concept development was to assess concept effectiveness. This assessment <br />reviewed traffic volumes under 2040 no -build and build scenarios for each concept. Section VI: <br />Traffic Forecasts and Analysis and Appendix D describe the no -build and build scenarios in detail. <br />What follows here is a preliminary review of how each concept addresses congestion in the <br />northwest metro. <br />The effectiveness of Concepts 1 and 2 was assessed by comparing 2040 peak -hour traffic volumes to <br />2040 peak -hour capacities on improved segments. As shown in Table 10, all four segments <br />improved under Concepts 1 or 2 were found to be "under capacity" post improvement. In this <br />table, under capacity means a volume -to -capacity ratio less than 0.85. This was an important finding <br />as it suggests the improvements considered would continue to be effective under year 2040 traffic <br />demand levels. <br />Table 10: 2040 Peak Hour Volume -to -Capacity Ratios at Improved Locations Under Concepts 1 & 2 <br />Highway Location <br />AM V/C <br />EB/ NB <br />AM V/C <br />WB/SB <br />PM V/C <br />EB/ NB <br />PM V/C <br />WB/SB <br />Highway 10 Armstrong Blvd to Highway <br />10/101/169 interchange <br />Highway 10 Hanson Blvd to Round Lake Blvd. <br />Highway 101 Highway 101/1-94 interchange I <br />1 <br />Highway 610 Highway 252 to Highway 169 <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Under <br />capacity <br />Additional analysis of concept effectiveness, including the impact of Concepts 3 and 4 on Highway <br />169 congestion, is provided in the next three sections. <br />Northwest Metro Mississippi River Crossing Feasibility Analysis <br />