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701 Xenia Avenue South | Suite 300 | Minneapolis, MN 55416 | (763) 541-4800 <br /> <br /> <br />Building a legacy – your legacy. <br />Equal Opportunity Employer | wsbeng.com <br /> <br />Memorandum <br /> <br />To: The Honorable Mayor, City Council and Staff <br />c/o Mark Casey, City Manager <br />City of St. Anthony Village <br /> <br />From: Todd Hubmer – City Engineer <br /> <br />Date: February 28, 2017 <br /> <br />Re: Silver Lake Road LED Street Light Improvement Project <br /> WSB Project No. 02170-270 <br /> <br /> <br />Background Information <br />This memo outlines the costs related to a street lighting retrofit from conventional high pressure sodium <br />(HPS) lighting to LED lighting along Silver Lake Road in the Cities of St. Anthony Village and New <br />Brighton. The project is broken up into three (3) separate areas (see attached map): <br /> <br />1) Silver Lake Road – 37th Avenue NE to Silver Lane <br />2) Silver Lake Road – Silver Lane to County Road E <br />3) Silver Lake Road – County Road E to I-694 <br /> <br />The Cities of St. Anthony Village and New Brighton are considering this project for several reasons: <br /> <br />1) Lights fixtures and poles were originally installed in 1998/1999, and many of the steel poles are <br />badly deteriorated due to years of road salt exposure. New poles will be fiberglass (37th Ave NE <br />– Silver Lane) and anodized aluminum (Silver Lane to County Road E). In addition, the light <br />fixtures are at or near the end of their life expectancy (20 years). <br />2) There will be ongoing energy savings associated with this lighting conversion. The energy cost <br />for LED lighting is significantly less the HPS lighting (about 50% energy cost savings). <br />3) There will be ongoing savings in maintenance costs and time savings due to decreased staff <br />maintenance over the existing system due to reduction in bulb replacement frequency and repairs <br />to deteriorating steel poles. <br />4) By collaborating with the City of New Brighton these poles, fixtures and installation can be bid <br />together thus benefitting from an economy of scale. <br />5) The lighting retrofit is in line with City’s sustainability initiative – LED lighting will have a significant <br />reduction in energy use. <br />6) Segment 1 of this project will provide consistency throughout the City by changing the pedestrian <br />level lighting style to match current City standard of a decorative Vernon style fixture on a fifteen- <br />foot (15’) fiberglass pole. <br /> <br />Details of the Proposed Retrofit: <br />The existing lighting on the first segment currently consists of thirty-foot (30’) steel poles with 250 watt <br />high pressure sodium (HPS) shoebox style light heads. These lights would be replaced with fifteen- <br />foot (15’) fiberglass poles with 3000k LED decorative Vernon style fixtures to match the city’s current <br />street light standard. The light pole bases will be reused; therefore, no additional light standards will <br />be added. <br /> <br />The second segment has similar lighting as the first segment consisting of thirty-foot (30’) steel poles <br />with 250 watt HPS shoebox style light heads. In addition, at the signalized intersections there are <br />250 watt HPS cobrahead style lights on mast arms. All of the lights along this segment will be <br />replaced with thirty-foot (30’) anodized aluminum poles with 4000k LED rectangular light heads. The <br />3737