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<br />. PROPOSED IMPROVEMENTS <br /> Proposed Roadway Improvements <br /> This report details four possible reconstruction alternatives for the roadway. The roadway <br /> segment length to be reconstmcted is approximately 780 meters (2600 feet) for all alternatives. <br /> All alternatives would be constructed to MnDOT State Aid standards. <br /> The proposed pavement will be a ten ton design utilizing MnDOT guidelines for flexible <br /> bituminous pavements. The pavement cross-section is assumcd to inelude 6 inches of <br /> bituminous surfacing plaeed over 12 inches of class 5 aggregate base. A 12 inch sand subbase <br /> with subdrainage pipe will also be constructed to provide for enhanced pavement support, <br /> pavement subdrainage and frost protection. A final pavement section will be determined upon <br /> the completion of soil borings and analysis of the existing sub grade soils. <br /> The reconstruction of approximately 70 meters (200ft) of Gateway Court is also included in all <br /> three alternatives. This reconstruction is necessary to allow for the raising of the intersection of <br /> Gateway Court and West Round Lake Road by approximately 1.5 meters (5 ft). The intersection <br /> grade needs to be raised to accommodate the extension of stOllli sewer from the pond located <br /> south of Gateway Boulevard to the north. <br />. The alternative cross sections are described further below and are illustrated in exhibits 2 and 3: <br /> Alternative A <br /> This alternative includes the reconstruction of West Round Lake Road into a 36 foot wide <br /> roadway with concrete curb and gutter along its entire length. The proposed right of way width <br /> for this alternative is 60 feet. The roadway would be constructed essentially over the same <br /> location as the existing roadway however the eastern curb line would be approximately 5 meters <br /> (15 ft) east of the current edge of pavement. This road section is considered the minimum level <br /> of improvement and would not provide left turn lanes for southbound traffic. Minor <br /> reconstruction of driveway entrances to the commercial buildings would be required. <br /> Enhancements could be added to the boulevards however the alternative does not include any <br /> medians. It is anticipated that minimal property acquisition would be required to construct this <br /> alternative. <br /> Alternative B <br /> This alternative includes the reconstruction of West Round Lake Road into a two lane divided <br /> bituminous roadway including curb and gLItter with a raised median. The design includes one 4.8 <br /> meter (16 ft) through lane in each direction and southbound left turn lanes at all existing <br /> commercial driveways. The proposed right of way width for this alternative is 80 feet. The <br /> eastern curb line would be approximately 9 meters (30 ft) east of the existing pavement edge for <br /> this alternative. <br />. This road section would provide improved traffic flow and channelization over altcrnati vc A <br /> however it would still provide only one through lane in each direction. Moderate reconstruction <br /> of driveway entrances to the commercial buildings would be required. Enhancements could be <br /> added to the boulevards and medians in this alternative. It should be noted that in order to <br /> maximize green spacc in the medians, left turn lanes are proposed to be approximately 20 meters <br /> 2 <br />