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2010-04-05-CPC-ATM-rpt
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2010-04-05-CPC-ATM-rpt
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Minutes - CPC - Community Preservation Committee
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ARTICLE S (a) <br /> Project: Minuteman Bikeway Preservation <br /> CPA Category: Recreational Use/Open Space (50150) <br /> Amount Requested: $320,000 <br /> Amount Recommended: $320,000 <br /> CPC Vote: (9-0) <br /> Project Description: <br /> The Minuteman Bikeway was opened in 1993. Over the last sixteen years there has been <br /> deterioration in numerous areas of Lexington's 5.5 mile section of the Bikeway. The deterioration <br /> is the result of a number of factors including improper drainage,root penetration., and erosion. In <br /> addition to the long-term deterioration of the Bikeway, there has been more recent and significant <br /> damage at particular locations. This project will prevent further damage from these problems and <br /> protect and preserve the condition of the Bikeway.Damage will be prevented through the <br /> installation of root barriers, drainage repairs,and swale restoration. The Town's Engineering <br /> Division.,with input from the Bicycle Advisory Committee,has identified key areas that need to <br /> be addressed to prevent further deterioration and to mitigate hazards to users. The work being <br /> proposed is beyond the scope of normal maintenance and is intended to address the problems <br /> caused by increased storm water runoff,erosion, and root heaving along discrete portions of the <br /> path(items not addressed in the initial construction of the Bikeway).Remediation will involve <br /> the installation of swales, culverts and other drainage solutions to address water flow and erosion <br /> control, and selective root pruning and installation of a root barrier to address the root migration <br /> and heaving problems. <br /> Project Goals and Objectives: <br /> • Mitigate pavement erosion,washouts and other damage to preserve the Bikeway. <br /> • Design and build drainage swales in several locations to enhance ground water recharge <br /> and slow street runoff beside the Bikeway into brooks. <br /> • Redesign,improve and/or replace several stream conduits that cross under the Bikeway. <br /> This will improve the health of the brooks while preserving the integrity of the Bikeway <br /> pavement and roadbed. <br /> • Mitigate root heaves on the trail bed caused by growth of large trees along the Bikeway <br /> by cutting roots and installing root barriers in several stretches. <br /> • Preserve usage of the Bikeway with these mitigation measures, keeping it a safe place for <br /> walking, cycling,rollerblading and other recreational activities. <br /> • Preserve this valuable resource for future generations to enjoy. <br /> Project Benefit: <br /> The Minuteman Bikeway has value to the community even beyond its importance as a <br /> recreational resource for Lexington citizens. It is also an economic resource,bringing large <br /> numbers of visitors to and through Lexington during most months of the year.The long-term <br /> viability of the Bikeway is in jeopardy unless the drainage and root problems are properly <br /> addressed. <br /> Funding Request: <br /> This FY 2011 request for$320,000 is to perform necessary drainage and root mitigation.The cost <br /> estimate for this project was developed by the Town's Engineering Division and is based on past <br /> similar projects. This request is in addition to $175,000 appropriated under Article 31(i) from <br /> Annual Town Meeting in 2007 for Bikeway paving, as yet unspent due to a re-examination of the <br /> entire Bikeway project. (Paving does not qualify for CPA funds.) <br /> 6 <br />
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