02-12-2014 Council Agenda - Laserfiche WebLink

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£L RING ASSO(I-ATtS Memo TO: Mayor Blesener & Members of the City Council FROM: Lee Elfering, City Engineer DATE: February 7, 2014 RE: Schletty Drive Improvements Those of you present at the public hearing for Schletty Drive are aware that there was some confusion and questions as to the watermain requirement of the improvement and assessments for those improvements. While there appeared to be consensus among the residents present that a street improvement was warranted a majority that expressed their thoughts at the meeting were not in favor of the watermain installation, likely due to the presented assessable cost. The need for watermain on this street is a unique factor given that there are only two streets within the City without watermain, this is the only street without watermain that is already an urban section, and the fact that some adjacent residents are already served. The latter two of these factors increase the estimated project costs and the associated assessment cost to those that are not already served with water. While the public hearing ended with the City Council voting to not move forward with the improvement, we feel there were sufficient questions on the improvement, the costs, and the assessments that some additional investigation and correspondence to residents and the Council was warranted. au HMI Street Condition and Proposed Improvement Due to the pavement and subgrade deterioration a replacement of the full street section is the most cost effective means of improving the street. That coupled with the need for watermain results in the need for a full reconstruction. There were discussions of only bituminous and gravel replacement inside the curb; however the installation of the watermain would necessitate significant curb removal and we are recommending full curb and gutter replacement. While it is estimated that the full curb replacement could add an additional cost of $6,000 to $8,000 dollars we feel it provides for a more cost effective and better overall project for the following reasons: • Spot curb removal and hand replacement costs more per foot than full removal and machine replacement, so you get less lineal feet of curb done for the same cost. • Some areas of curb will need to be removed due to damage or poor drainage in addition to that required for watermain installation. • Removal of all curb will allow us to narrow the street to a 28 -foot section with barrier curb reducing the storm water treatment required by the Watershed and would benefit the steep driveway grades on the north side of the street. • Replacement of all curb will ensure a smooth and consistent curb and gutter line throughout the entire project length. 10062 Flanders Court NE - Blaine, MN 55449 - (763) 700 -0450 fax (763) 700.0452 Z :PROJ \120172E - 2014 Street & Utility Improvements10030 \Memo- 020714 -CC (Schletty Improvement Oireclion).doc