03/09/2005 Council Packet - Laserfiche WebLink

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• • • Intersection. Improvements to the intersections of Woodland Drive and 21St Avenue are proposed with the project. Woodland Avenue will retain full access. Both right and left turn lanes are proposed at this intersection. The 21St Avenue intersection straddles the corporate limits of Lino Lakes and Centerville. The intersection is located approximately 750 feet from the existing I -35E ramps. The design of the intersection is impacted by the future improvement of the CSAH 14/I -35E interchange as well as future traffic projections. The conceptual interchange layout, prepared by the Minnesota Department of Transportation (Mn/DOT), includes a loop in the northwest quadrant of the interchange which places the existing southbound I -35E off ramp approximately 500 feet from the 21St Avenue intersection. Because of the limited intersection spacing and projected traffic volumes it is unlikely that a full access at 21St Avenue can be maintained without greatly impacting future traffic operations. Anoka County originally proposed a median across the 21St Avenue intersection which would limit access on both sides of CSAH 14 to right -in, right out movements. Due to concern from adjacent businesses the County is now proposing a 1/4 intersection that would allow right -in, right -out and left-in turning movements. Mn/DOT is currently reviewing the plans and has previously expressed concern of maintaining this design when the new interchange is constructed. The MOU identifies the possible need to modify the proposed intersection as part of the interchange reconstruction. It also requests acknowledgement that the proposed left turn movements at 21st Avenue may be closed for capacity and safety reasons in the future. From staff's perspective, the issue over the intersection spacing is valid. Given the potential for development north and south of CSAH 14, a full access at 21St Avenue, could lead to operational problems along CSAH 14 in the future. The proposed 1/4 intersection provides for the majority of turning movements and coupled with a "backage road" between 20th Avenue and 21St Avenue would resolve many of the impacts to existing businesses. However, construction of a backage road system would be a local improvement and most likely constructed in conjunction with future development. The City of Centerville has indicated its objection to the proposed 21st Avenue access limitation. Anoka County has indicated their interest in preparing additional interchange concepts to evaluate the impact to 21St Avenue. Right -of -Way. Anoka County will be responsible for acquiring all right -of -way and easements for the project. The City is only responsible for acquisition relating to improvements outside of the existing project limits. The City may need to acquire utility easements along 21st Avenue, north of Main Street for water and sanitary sewer trunk mains. Any special assessment searches required for the project will be performed at no cost to the county.