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September 11, 2021 <br />Page 45 <br />Concept 1: Mobility Improvements on Highway 10 and Highway 101 <br />Concept 1 focuses investment on the existing system north of the Mississippi River. On Highway <br />10, the concept provides grade separation on the remaining expressway portion in Ramsey and Elk <br />River. The concept also includes the Coon Rapids Lane add and the diverging diamond interchange <br />conversion on Highway 101 at I-94. <br />Figure 26: Concept 1— Mobility Improvements on Highway 10 and Highway 101 <br />Concept improvement area <br />Grade -separated <br />crossings <br />Addition of <br />third lane <br />Diverging diamond <br />inte rch n e <br />coo <br />ran <br />Maple Grovie <br />Table 6: Concept 1 Improvement Details and Cost Range <br />Highway Improvement <br />Segment <br />Total Project Cost <br />(2030 dollars) <br />Highway 10 <br />Highway 10 <br />Highway 101 <br />Net Cost <br />Grade separated <br />crossing <br />Hwy 169 (Elk River) to Armstrong Blvd. <br />I(Ramsey) <br />Lane addition <br />EB and WB lane add from Hanson Blvd. to <br />Round Lake Blvd. <br />Diverging diamond <br />interchange <br />Diverging diamond interchange at Hwy 101 <br />and 1-94 <br />$115M - $290M <br />$36M <br />$22M -- $26M <br />$175 — $350M <br />Northwest Metro Mississippi River Crossing Feasibility Analysis <br />