Agenda Packets - 2008/03/10 - Laserfiche WebLink

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Mounds View, Minnesota Project No: 435-08131-0 2008 Street Maintenance Project Page 4 and structure. While a seal coat operation will not add structural strength to a road, it will increase the friction of the surface through the application of the aggregate material. This results in increased safety, as vehicle tires are able to grip the surface more readily for braking and maneuvering. Prior to performing the seal coat, all crack sealing to be done must be completed on the existing bituminous street surfaces. A clean, dust free surface is also vital to the success of a seal coat. A seal coat is proposed for all streets in the 2008 Street Maintenance Project. Due to the specialized nature of the work, it would be performed by a contractor as part of the construction contract. PAVEMENT MARKINGS There is only a minimal amount of existing pavement markings within the project area, consisting of longitudinal markings, stop bars, parking lines, and other miscellaneous small markings. The locations of all existing pavement markings would need to be recorded prior to the seal coat, so the markings can be re- established. The City of Mounds View participates in an annual program where the required pavement markings in the City are placed by Ramsey County. The City receives very favorable prices from the County for the placement of the markings. Therefore, it is recommended that any pavement markings required as a result of the seal coat performed not be included in the construction contract for this project. This will result in a cost savings to the City. City Staff will need to perform all necessary coordination with the County for the scheduling and placement of the pavement markings. The only exception in regards to pavement markings would again be the parking lot of Lakeside Lions Park. Similarly to crack sealing, replacement of the pavement markings in that parking lot are recommended to be included as part of the construction contract, due to the joint ownership and financial participation by both Mounds View and Spring Lake Park. Cost Estimates Detailed cost estimates have been prepared for the maintenance activity as described above and are included in the Appendix. The costs are based on unit prices anticipated for the 2008 construction season and include allowances for engineering, administration, legal costs, and financing. The total of all allowances is estimated to be 30% of the construction cost. The Appendix shows the estimated project costs based on the total estimated construction quantities that will be used on the project. It also provides a breakdown of cost on a street-by-street basis to assist the City with budget considerations. The total estimated cost for the 2008 Street Maintenance Project is $181,600.00.