Agenda - Council - 12/11/2012 - Laserfiche WebLink

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Project Description The Riverdale Drive Extension project is programmed into the City's CIP for construction in 2013. The project limits are Riverdale Drive (partially new alignment) from Armstrong Blvd to Traprock Street. The existing segment (approx. 1900' in length) of Riverdale Drive, from Armstrong Blvd to the east cul-de-sac, is in poor condition and will be reconstructed. The new segment, from the eastern cul-de-sac to Traprock Street is approximately 2,500' in length and will include re -aligning the Traprock access to Highway 10. Work in Mn/DOT ROW will be necessary to construct the new turn lanes, acceleration lanes, and remove the center median/crossing at the existing Traprock Street access location. The new access (approximately 100' west of existing) will be a 3/4 access, with the movement from Riverdale Drive to westbound Highway 10 prohibited. The Alpaca Street access to Highway 10 will also be eliminated. Sanitary sewer and watermain will also be extended with the project. The sanitary sewer will be extended from the intersection of Armstrong Blvd and Riverdale Drive to just east of the location of the current cul-de-sac (onto Hope Fellowship property). Due to the depth, it is likely that a lift station will be required in the future to serve the surrounding undeveloped area. The likely location of the sanitary sewer lift station will be determined with this project for determining the location and alignment for the termination of the gravity sanitary sewer constructed with this project. The watermain will be extended from the Armstrong Blvd/Riverdale Drive intersection along the entire alignment of this project, and possibly extended to make a connection with existing watermain at Ramsey Blvd. This project will impact the existing stormwater pond adjacent to Highway 10. Stormwater ponding and mitigation for this project will be necessary. Scope of Work For the purposes of this report, we have broken the work into several tasks. The following items detail the work tasks required. Proiect Initiation and Coordination Data Compilation — (Background Information) The Ramsey Engineering Department will compile and review all known available documents of existing features and planned projects in the vicinity of the proposed work. Soil borings and a geotechnical report will be completed by Northern Technologies, Inc. Gopher State One Call The Ramsey Engineering Department will contact Gopher State One Call prior to initial field operations to obtain locations of existing utilities. If possible, the locations of the existing facilities will be surveyed. At a minimum, the locations will be drafted into the base map using maps provided. Survey Coordination and Controls The Ramsey Engineering Department will coordinate and conduct all ground survey efforts. A full topographic survey will be completed and control on the project will 2