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September 11, 2021 <br />Page 40 <br />Highway 101-A2: SB Highway 101 to EB I-94 Flyover Ramp <br />Highway 101-A2 includes construction of a flyover ramp for southbound Highway 101 from north <br />of South Diamond Lake Rd to eastbound I-94. This includes the construction of a 35-foot wide, <br />3,425-foot long flyover bridge requiring long curved steel beams along the structure and retaining <br />walls to limit earthwork and right-of-way acquisition. Adjustments would be made to the existing <br />interchange including removal of the existing northbound to eastbound on ramp and modifications <br />to the southbound to eastbound loop ramp to accommodate NB and SB traffic with a signal. Low <br />and high -cost estimates differ primarily on risks associated with the flyover bridge design. <br />Figure 21: Highway 101-A2: SB Highway 101 Flyover to EB 1-94 <br />m <br />DEPARTMENT OF <br />TRANSPORTATION <br />NORTHWEST METRO <br />Mississippi River Crossings <br />Feasibility Analysis <br />CONCEPT DEVELOPMENT <br />TH 1O1-A2 <br />Southbound TH 101 Flyover to Eastbound 1-94 <br />Flyover bridge <br />Roadway improvement area <br />Signalized intersection <br />Northwest Metro Mississippi River Crossing Feasibility Analysis <br />