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Building Cobb County Georgia's Thoroughfare Sidewalk Inventory In BuildingBuilding CobbCobb CountyCounty GeorgiaGeorgia’’ss ThoroughfareThoroughfare SidewalkSidewalk InventoryInventory inin CobbETRANSCobbETRANS Lynn Biggs, GISP Cobb DOT CobbCobbCobb CountyCountyCounty GeorgiaGeorgiaGeorgia GISGISGIS TheThe GISGIS ImplementationImplementation PlanPlan The guiding document for the county-wide, enterprise GIS implementation. November 1999 Consists of six major program elements: • Database development/conversion • Hardware • Software • Application development • Personnel • Overall project management Periodically updated to reflect the ongoing progress of the county-wide GIS implementation CobbCobbCobb CountyCountyCounty GeorgiaGeorgiaGeorgia GISGISGIS Four Cornerstone GIS databases: Data Department Completed Full color 6” digital GIS Core (Kucera) 2000 orthophotos 100% annual update since 2003 Digital Terrain Model and GIS Core (Kucera) 2000 2’ contours 20% annual update since 2003 Tax Assessor’s Parcel DOT, Tax, ComDev, January, 2004 Database Water, Core (SDS) Cobb ETRANS - Intelligent E911, DOT, Core January, 2005 Transportation Network (ARCADIS) Digital Digital Terrain Digital Parcel Transportation Orthophotography Model Map Network CobbETRANSCobbETRANSCobbETRANS CobbETRANS • 4 route feature classes Ref_Roadways RouteFeature Pathways Railway • Geometric Network CobbETRANSCobbETRANSCobbETRANS dynamic segmentation Routes ID FROM TO A10 0 100 Sidewalks Landscape License 100 A10 Dallas Highway 0 Sidewalks Landscape License ID FROM TO ID FROM TO 30 A10 40 A10 50 60 A10 50 70 CobbETRANSCobbETRANSCobbETRANS UpdateUpdateUpdate ProcessProcessProcess CobbETRANSCobbETRANSCobbETRANS DataDataData DevelopmentDevelopmentDevelopment E911E911 AddressesAddresses Cobb E911 CobbETRANSCobbETRANSCobbETRANS DataDataData DevelopmentDevelopmentDevelopment BusBus RoutesRoutes DOT Planning Division CobbETRANSCobbETRANSCobbETRANS DataDataData DevelopmentDevelopmentDevelopment TrafficTraffic CountsCounts DOT Traffic Engineering 200520052005 CobbCobbCobb SPLOSTSPLOSTSPLOST MobilityMobility SafetySafety InfrastructureInfrastructure PedestrianPedestrian // BicycleBicycle Program Total $870,000,000 www.cobbcip.org CobbCobbCobb SPLOSTSPLOSTSPLOST CapitalCapital ImprovementImprovement ProjectsProjects DOT Engineering Division CobbCobbCobb SPLOSTSPLOSTSPLOST –––Pedestrian/BicyclePedestrian/BicyclePedestrian/Bicycle NeedsNeedsNeeds 5% of Transportation Program $43.5 million Windy Hill Road z Sidewalks Cobb County Sidewalk Plan z Multi-use Trails Cobb County Trail Plan: z Bicycle Improvements Cobb County Bicycle Plan: –Bicycle friendly roadways –Bike lanes CobbCobbCobb SPLOSTSPLOSTSPLOST Challenge: Map Existing Sidewalks for County Thoroughfare Roads…in a month z Part time GIS technician z CobbETRANS -- tr-Sidewalk event table z Cobb County Digital Orthophotography z Pictometry – Oblique Photography CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks trSidewalktrSidewalk - - RouteFeatureRouteFeature Event Event Table Table CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks Pair Road CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks Pair Road CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks ExistingExisting SidewalksSidewalks CobbCobbCobb SPLOSTSPLOSTSPLOST ––Sidewalk Sidewalk PlanPlan 20062006 Criteria Arterial Sidewalk on both sides of road Major Collector (Multi-lane) Major Collector (Two-lane) Sidewalk on one side of road Minor Collector CobbCobbCobb SPLOSTSPLOSTSPLOST Challenge: Map proposed and programmed sidewalks z Proposed sidewalks are those needed to meet previous criteria. z SPLOST funded thoroughfare projects will include sidewalks = programmed. CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks Existing,Existing, Programmed,Programmed, andand ProposedProposed SidewalksSidewalks CobbCobbCobb SPLOSTSPLOSTSPLOST ––Sidewalk Sidewalk PlanPlan 20062006 in miles SPLOST Proposed Functional Thoroughfare Sidewalk Existing roadway Need to Class Centerline Goal Sidewalk projects Meet sidewalks Goal Arterial 268 536 259 46 231 Major Collector Major Collector 21 42 23 0 19 (Multi-lane) Major Collector 153 153 90 17 46 (Two-lane) Minor Collector 196 196 90 13 93 Total 638 927 462 76 389 CobbCobbCobb SPLOSTSPLOSTSPLOST ––Sidewalk Sidewalk PlanPlan 20062006 Sidewalk Plan Total Sidewalk Goal 927 miles Total Existing and Programmed 538 miles Sidewalks Total Need 389 miles Estimated Cost $194,000,000 389 miles * $500,000 per mile CobbCobbCobb SPLOSTSPLOSTSPLOST ––Sidewalk Sidewalk PlanPlan 20062006 CriteriaCriteria andand GuidelinesGuidelines z Land Use Connectivity – Cobb County Schools and Facilities – Cobb Community Transit Routes and Facilities – Activity Centers Within the Community z Safety Issues/Gap Closures – Narrow Shoulders – High Accident History – Obstructions – Existing Pedestrian/Automobile Conflicts – Missing Sidewalk Segments – ADA Enhancements/Upgrades CobbCobbCobb SPLOSTSPLOSTSPLOST ––Sidewalk Sidewalk PlanPlan 20062006 CriteriaCriteria andand GuidelinesGuidelines –– cont.cont. z Engineering Issues –Design – Available Right of Way –Complexity z Funding Analysis – Existing Federal, State or Other Non-SPLOST Funding Commitment – Potential Ability to Leverage Federal, State or Other Funding z Other Factors – Roadway Classification – Equity – Documented Public Support –Total Project Cost CobbCobbCobb SPLOSTSPLOSTSPLOST SidewalksSidewalksSidewalks CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks Requested CobbETRANSCobbETRANSCobbETRANS DataDataData DevelopmentDevelopmentDevelopment Next Step: Bus Stops CobbETRANSCobbETRANSCobbETRANS SidewalksSidewalksSidewalks ConclusionConclusion z Good GIS plan z Good photography is valuable for data collection z Dynamic segmentation – Related to the road – Easy to maintain – Flexible z Multi-user environment z LeveragedLeveraged limitedlimited resourcesresources toto provideprovide informationinformation inin aa timelytimely mannermanner forfor decisiondecision makersmakers Questions? Taylor Busch, GIS Technician Larry Stokes, Planner III http://www.cobbdot.org.
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