Low Impact Development (LID) Feasibility Study - City of Kirkland

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6th St. Sidewalk (CIP Project#: NM 0059 000)CIP Project DescriptionInstall ~ 500 linear ft. of five-foot cement concrete sidewalk and crossing improvements at Kirkland Ave. In locations where applicable a planterstrip will be installed.LID Opportunities and Benefits• Installing porous pavement sidewalks will reduce the runoff from the shoulders.• Rain gardens and bioretention swales can provide flow attenuation and stormwater treatment of roadway runoff.Porous sidewalks will reduce the amount of new impervious surfaces. In addition to installing porouse sidewalks along 6th St, creating areasfor stormwater collection and treatment in an underutilized pocket park, there is an opportunity to provide demonstration of stormwatermanagement to pedestrians. Rain gardens and bioretention swales will provide flow attenuation and water quality treatment for runoffcollected from the roadway.General existing conditions & considerations• No sidewalk on 6th St. from Kirkland Ave. to 1st Ave. S.• Pedestrian crossing at corner of 6th St. S. & Kirkland Ave.• Road cross section crowns east of center; only 8’ of roadway drains to east side of the street• Small triangular pocket park at corner of 6th St. S. and north side of Kirkland Ave.curb cutsPocket Park at 6th St. S. and Kirkland Avenue looking north - existing (seeon diagram)Pocket Park with rain garden at 6th St. S. and Kirkland Avenue looking north -proposedProposed concept• Porous pavement sidewalk on east side of 6th St. S.• Rain garden in pocket park• Possible rain garden along sidewalk and bulb-out extensions at crosswalk5’PorousSidewalkMin. 4’ Raingarden6th Street sidewalk looking south at Kirkland Ave. - proposed22’ Two-Lane Roadway60’ROW4’-12’ Rain garden 5’Sidewalk22 City of Kirkland LID Feasibility Study for CIP Projects | SvR No. 07016 | December 21, 2007 c
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !6th St. S.PocketParkMedian6th St. S.PocketPark6th St. Sidewalk (CIP Project#: NM 0059 000)Kirkland Ave.Existing CrosswalkendlinesE_TYPELegendPedestrianCirculationVehicular TravelLanes6th St. S.CULVRTRight-of-Way! ! !DITCHPavement EdgesLAKEPIPEContour Lines (2’)PONDStreamSTREAM!SWALEPipeCulvert1st St. S.wetlandstax_parcelpavementedgeROWDitchWetlandBioretention swalebldg_pyRain gardenPhoto (takenfrom this point)Feet0 50 100 150[cKirkland LID Feasibility Study6th St. S.City of Kirkland LID Feasibility Study for CIP Projects | SvR No. 07016 | December 21, 200723
Page 1: Low Impact Development (LID) Feasib
Page 5 and 6: IntroductionProject SummaryCity of
Page 7 and 8: IntroductionWashington’s neighbor
Page 9 and 10: Low Impact Development (LID) Glossa
Page 11 and 12: Kirkland LID Feasibility Study for
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Page 16 and 17: NE 100th St. (CIP Project #: NM 003
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Page 35 and 36: Zone 2 (Park Lane East)General exis
Page 37: LID Cost SummaryThe following estim

Low Impact Development (LID) Feasibility Study - City of Kirkland

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