08/11/2010 Council Packet (2) - Laserfiche WebLink

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TKDA ENGINEERING *ARCHITECTURE • PLANNING The right time. The right people. The right company 444 Cedar Street, Suite 1500 Saint Paul, MN 55101 (651) 292 -4400 (651) 292 -0083 Fax www.tkda.com CONSTRUCTION ESTIMATE LAKE DRIVE (CSAH 23)/MAIN STREET (CSAH 14) IMPROVEMENTS CITY OF LINO LAKES, MINNESOTA August 11, 2010 TKDA prepared a draft Signal Justification Report (SJR) for the intersection of Lake Drive and Main Street and submitted it to the County for comment on May 14, 2010. Following meetings with the County, the SJR was revised and submitted for final review and comment. TKDA was also authorized to prepare a concept layout and cost estimate for the intersection signal and associated roadway work. The concept layout is based upon the discussions with the County for the SJR and potential signalization. A draft concept layout was initially prepared by the County. TKDA updated the concept layout based on comments and discussion at a subsequent meeting on July 16, 2010. A construction estimate was prepared using the revised concept layout and in consideration of the following items: • The existing ground elevation was estimated due to the lack of survey information. Topographical information, where available, was used to help estimate the ground elevation. • Permanent right -of -way needs were estimated for three approaches. • Where widening was necessary to accommodate the new turn lanes, a full -depth bituminous sawcut was assumed at the inside edge of the road. • A mill- and - overlay was planned for areas adjacent to new widening or where new striping will be required. The depth of the mill planned was 2 inches. • Bituminous removal and sawcut quantities included reconstruction of private driveways where necessary. • The new curb in the northwest quadrant on Main Street eliminated the existing on- street parking. • Access management associated with the proposed project reduced the private driveways intersecting the public roadways. • A geotechnical investigation was not completed. This construction estimate included the removal of 24 inches of topsoil, organic material, and existing soils. An Employee Owned Company Promoting Affirmative Action and Equal Opportunity