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<br />Dallas Larson <br /> <br />From: <br />Sent: <br />To: <br />Cc: <br />Subject: <br /> <br />Doug Fischer [Doug.Fischer@co.anoka.mn.us] <br />Monday, July 14, 20086:33 AM <br />dlarson@centervillemn.com <br />Andrew Witter; Jane Rose; Rhonda Sivarajah; Mary Capra <br />Re: Guard Rail-CSAH 21 <br /> <br />~ <br />~~ y <br />~~ <br /> <br />Dallas, <br /> <br />Per your request, Anoka County conducted a review of a need for guardrail along CSAH 21 in <br />the vicinity of Center Street. Based on this review, we will not be proceeding with a <br />guardrail or other modification. <br /> <br />We prepared an analysis of the existing section for meeting standards, crash incidence, <br />and cost to cure. A brief summary is provided herein: <br /> <br />When compared to reconstruction standards for state aid routes of this speed and ADT, we <br />agree that this roadway section is deficient in shoulder width, inslope and clearzone. <br />Short of a total reconstruction (which is cost prohibitive), two solutions were analyzed: <br />1.) guardrail installation, and 2.) inslope flattening, ditch filling & pipe installation. <br />Guardrail itself is a roadside hazard, especially in this case where it is very close to <br />the traveled lane, creates sight obstructions at intersections, and prevents the proper <br />clearing of snow from the roadway. Therefore, unless we have a more hazardous obstruction <br />that we are trying to prevent vehicles from hitting (and an established history of these <br />crashes), we generally rule out this treatment. We did cost out installation at this <br />location at $27,000. <br />The preferred method would be to flatten out the ditch and clear all obstructions from the <br />right-of-way. However, this would require the filling of the roadside ditch and the <br />installation of a pipe to convey the drainage through this area. The cost estimated for <br />this work is $57,000. <br /> <br />We conducted a 5-year crash review for this segment of road for the reporting periods of <br />January 2002 through December 2006. Our review showed 4 crashes: 1 vehicle hitting a <br />mailbox south of Center Street, a sideswipe crash for a turning vehicle with another on <br />Meadow Lane, a 90-degree crash at Heritage Street, and a 90-degree crash at Sorel Street). <br />None of these crashes reported personal injuries and were property damage only. It also <br />appears that there were no incidences involving the inslope and ditch. It appears that <br />neither a guardrail installation nor a inslope grading project would have prevented these <br />types of crashes. <br /> <br />In conclusion, we do not have a crash history related to the inslope and ditch, guardrail <br />installation will create more of a hazard, and slope flattening is very expensive related <br />to the lack of correctable crashes. Therefore, we will not be proceeding with a guardrail <br />or grading project at this time. <br /> <br />If you have any questions regarding this review, please let me know. <br /> <br />Douglas W. Fischer, P.E. <br />County Engineer <br />Anoka County Highway Department <br />1440 Bunker Lake Boulevard NW <br />Andover, MN 55304 <br /> <br />Phone: <br />Fax: <br />E-mail: <br /> <br />763-862-4213 <br />763-862-4201 <br />doug.fischer@co.anoka.mn.us <br /> <br />At the Anoka County Highway Department, our Passion is your safe way home. <br /> <br />>>> "Dallas Larson" <dlarson@centervillemn.com> 07/07/2008 12:48 PM <br />>>> <br /> <br />1 <br /> <br />L_ <br />