05-08-2017 Council Packet - Laserfiche WebLink

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CITY COUNCIL AGENDA ITEM 6D STAFF ORIGINATOR: Diane Hankee, City Engineer MEETING DATE: May 8, 2017 TOPIC: Consider Resolution No. 17-42, Accepting the Feasibility Report, West Shadow Lake and LaMotte Neighborhood Street Reconstruction VOTE REQUIRED: 3/5 INTRODUCTION Staff is requesting City Council consideration to accept the feasibility report for the West Shadow Lake and LaMotte Neighborhood Street Reconstruction project. BACKGROUND On January 9, 2017 the City Council authorized the preparation of a feasibility report for the West Shadow Lake and LaMotte Neighborhood Street Reconstruction Projects. The report was presented to Council at the May 1, 2017 work session. The report outlines the necessary roadway and drainage improvements, and estimated project costs. The estimated cost of the West Shadow Lake neighborhood roadway and drainage improvements is $4,484,000. The estimated cost of the LaMotte neighborhood roadway, drainage and sanitary sewer rehabilitation is $1,112,000. There are multiple roadway and drainage design options for the West Shadow Lake neighborhood outlined in the report. Option 1 - Replace or reclaim the existing roadway without subgrade or drainage improvements and maintain existing width. This design would result in a roadway with approximately half of the pavement life expectancy. In addition storm water quality and drainage issues would not be addressed. Option 2 - Reconstruct the roadway to meet the City’s standards for road structure and subgrade, construct a 24 foot wide rural section roadway, and provide drainage improvements as feasible. This option includes improving the roadway to maximize the pavement life expectancy, and provides stormwater management as feasible. Option 3 - Reconstruct the roadway to meet the City’s standards for road structure and subgrade. Construct a 26 foot wide rural section along the south end, and a 28 foot wide urban section along the north end. This option includes stormwater management. For planning and funding the project, the more conservative cost estimate has been included, Option 3. Staff is continuing to work on a cost effective design option in coordination with Rice Creek Watershed District, Option 2.