Agenda - Public Works Committee - 01/19/2021

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side. An 8-foot wide on -street parking lane will be provided along the entire south side of Riverdale Drive to accommodate overflow parking for adjacent properties, as well as parking for the proposed river overlook east of Dolomite Street. Through lanes are proposed to be 12-feet wide, with a 2-foot curb reaction distance on the north side to better accommodate truck traffic and to mitigate loss of useable pavement in the winter due to snow and ice accumulations along curbs. The existing 10-foot wide off-street bituminous trail north of Riverdale Drive that terminates approximately 300 feet east of Dolomite Street is proposed to be extended to Feldspar Street. This will allow pedestrians and bicyclists to use the off-street trail, which will be separated from Riverdale Drive by an 8-foot wide boulevard that will better accommodate snow storage and reduce drifting of snow along the corridor compared to the existing 0 to 2-foot wide boulevard. A 6-foot wide concrete sidewalk was contemplated along the south side of Riverdale Drive between Dolomite Street and Feldspar Street to enhance pedestrian access to Riverdale Park for pedestrians with origins or destinations south of Riverdale Drive. However, these improvements were estimated to cost $110,000 so it was determined that the estimated cost outweighed the benefits so this sidewalk segment is not proposed to be constructed at this time. Also contemplated was construction of the Mississippi River observation deck as proposed for construction on sheet 173 of the 2021 - 2030 CIP, which is attached for reference. Instead, staff recommends letting the development of the private property drive the construction of the observation deck. Timeframe: Staff estimates 15 minutes will be required to present this case and respond to questions. Observations/Alternatives: Observations: Staff will present pertinent draft plan sheets during the meeting, as well as other applicable information and updates on estimated costs, funding, and project schedule. Alternatives: Alternative #1 — Motion recommending City Council approval of plans and specifications and authorization to advertise for bids for Riverdale Drive Reconstruction, Improvement Project #21-00. Alternative #2 — Motion of other. Funding Source: The draft engineer's opinion of probable project costs for constructing the proposed improvements outlined in the plans is $900,000. Estimated project costs include an additional 23-percent for administrative, engineering, finance and legal fees, which totals $1,107,000. The street improvements proposed with this project are identified in the 2021-2030 Capital Improvement Program (CIP) for construction in 2021 at an estimated project cost of $836,000. The improvements are proposed to be funded using a combination of MSA Funds, Water Utility Funds, and Stormwater Funds. Recommendation: Staff recommends alternative # 1. Other Staff recommendations include not constructing concrete sidewalk south of Riverdale Drive as part of this project and not constructing the Mississippi River observation deck as part of this project. Action: