Agenda - Council - 02/10/2015 - Laserfiche WebLink

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4. PROPOSED IMPROVEMENTS 4.1 Street and Stormwater Improvements 4.1.1 Jarvis Street Jarvis Street is part of the City of Ramsey's Municipal State Aid System (MSAS) and is eligible for State Aid funding. Jarvis Street is also part of the City of Elk River's MSAS system of streets. Pathway/Sidewalk: Six-foot wide on -road bike lanes are proposed to facilitate pedestrian movements. This corridor is not typically utilized by pedestrians and based on the existing land uses it is not anticipated that the on -road bike lanes will be heavily used. Street Design: Jarvis Street is proposed to be reconstructed as a 36 -foot wide urban section (two 12 -foot through lanes and two 6 -foot bike lanes) with bituminous pavement and B618 concrete curb and gutter on both sides to better delineate and facilitate drainage. Curb cuts and concrete flumes will be located along both sides of Jarvis Street to convey stormwater runoff from the street into the shallow ditch sections, where runoff will then be conveyed through culverts under driveways as needed. Elk River is proposing to reconstruct Jarvis Street using a bituminous pavement section of 8" of class 5 aggregate base and 41/2" of bituminous wear course. This pavement design meets State Aid standards for a 9 ton design section. Elk River is proposing to perform variable -depth subgrade corrections along Jarvis Street by removing and replacing unsuitable soils with imported select granular borrow ranging in depths up to 60 -inches. The intent is to provide a uniform subgrade section that will not be prone to differential settling over time and will require less maintenance over time to reduce the City's long-term maintenance costs and to maximize the life of the reconstructed street. Stormwater Improvements: Stormwater improvements are proposed to include new concrete curb and gutter, curb cuts along both sides of the streets, and concrete flumes to convey runoff into the shallow ditches, where it will then be conveyed through a system of ditches and culverts to stormwater ponding areas. The opinion of probable costs includes a contingency cost of $40,000 for purchasing land for stormwater easements and ponding as needed. 4.1.2 BNSF Railroad Crossing Quiet Zone Improvements The existing railroad crossing will be reconstructed to include concrete curbing, raised concrete medians, new rails, ties and ballast, along with the installation of two -quadrant gate systems with flashers. These improvements will accommodate a future quiet zone. Feasibility Report Jarvis Street Reconstruction and Railroad Crossing Quiet Zone Improvements City of Ramsey Project No. 15-20 Page 6