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September 11, 2021 <br />Page 84 <br />Figure 62 shows year 2040 congestion duration on Highway 169. Under existing conditions there are <br />four hours of congestion in the northbound direction, and one hour of congestion in the <br />southbound direction. Congestion duration increases to seven hours in the northbound direction <br />and three hours in the southbound direction under the 2040 no -build condition. Under both <br />Concept 1 and Concept 2 scenarios, northbound hours of congestion decrease to six hours per day, <br />while hours of southbound congestion do not change. Northbound hours of congestion for <br />Concepts 3 and 4 decrease to four hours per day while the southbound congestion decreases to one <br />hour per day. <br />This analysis indicates that congestion duration on the Highway 169 crossing will double between <br />2018 and 2040 under no -build conditions, from five hours per day (four hours northbound and one <br />hour southbound) to 10 hours per day (seven hours northbound and three hours southbound). <br />Under the Concept 3/4 scenario, year 2040 congestion duration returns to levels consistent with <br />year 2018 conditions. <br />Figure 62: Highway 169 Year 2040 Congestion <br />Existing <br />2040 No Build - Traditional <br />2040 Build Concept 1 - Traditional <br />2040 Build Concept 2 - Traditional <br />Z040 Build Concept 3/4 - Traditional <br />1 <br />3 <br />6 3 <br />3 <br />1 <br />Hours of Coneestion oer Weekday <br />• Northbound <br />• Southbound <br />10 12 <br />Congestion Duration Sensitivity Tes* <br />A congestion duration sensitivity test was also conducted for 2040 congestion duration on Highway <br />169 using forecasts that assume increased telecommuting. The same methodology was used to <br />determine daily hours of congestion in the telecommute scenario as the scenario with traditional <br />travel behavior assumptions. <br />Figure 63 and Figure 64 on the next page provide 2040 daily volume profiles for both directions of <br />Highway 169 under telecommute scenarios. These profiles illustrate the times of day Highway 169 is <br />congested (volumes reach the corridor's capacity threshold). Congestion duration — the range of <br />times volumes reach the corridor's capacity threshold — is broadest under the 2040 no -build <br />scenario. The duration narrows modestly under the Concept 1 and 2 scenarios. Under the Concept <br />3/4 scenario, congestion duration narrows significantly relative to 2040 no -build. <br />Northwest Metro Mississippi River Crossing Feasibility Analysis <br />