Agenda - Council Work Session - 10/12/2021

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September 11, 2021 Page 80 Intersection Delay Sensitivity Test Peak hour operational analysis was also conducted for the Highway 10/Armstrong Boulevard interchange using forecasts assuming increased telecommuting. The same methodology was used to calculate intersection delay under the telecommute forecast as under the forecast with traditional travel behavior assumptions. AM peak hour intersection delay with increased telecommuting and existing geometry is shown in Figure 55. PM peak hour intersection delay with increased telecommuting and existing geometry is shown in Figure 56. These figures show that the Highway 10/Armstrong Boulevard interchange will operate below 2040 no -build conditions if a new river crossing is built, but with significantly less delay under forecasts with increased telecommuting than under forecasts with traditional travel behavior assumptions. This is especially true during the AM peak hour, at which time intersection delay under the telecommute build scenario is half the delay under the traditional build scenario. Figure 55: Hwy 10/Armstrong Blvd Intersection Delay with Increased Telecommuting; AM Peak Hour - Existing Geometry Existing Conditions M 9 6 2040 No Build - Traditional 30 12 41 2040 Concept 3 - Traditiona I 48 56 2040 Concept 4 - Traditional 49 84 2040 No Build - Telecommute 26 12 27 2040 Concept 3/4 - Telecommute 37 44 58 ■ Bunker Lake Blvd ■ TH 10 WB Ramp ■ TH 10EB Ramp 113 151 Intersection Delay (sec) 2 50 300 Figure 56: Hwy 10/Armstrong Blvd Intersection Delay with Increased Telecommuting; PM Peak Hour - Existing Geometry Existing Conditions _ 12 8 2040 No Build - Traditional 2040 Concept 3 - Traditional 2040 Concept 4 - Traditional 2040 No Build - Telecommute 2040 Concept 3/4 - Telecommute 17 33 ■ Bunker Lake Blvd ■ TH 1OWB Ramp ■ TH 10 EB Ramp 70 121-1116-111 is 28 50 100 150 200 250 300 Intersection Delay► (sec) Northwest Metro Mississippi River Crossing Feasibility Analysis