Name: Centerline Sidewalks

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Description: Paved sidewalk centerlines delineated from 2016 aerial imagery. ```CAPTURE CRITERIA: Sidewalk centerlines are compiled in 2D. This feature includes paved sidewalks and paved trails with width greater than 5 feet. Sidewalks are defined as paved paths for pedestrians, "Point A to Point B" use. Trails are defined as paved walkways intended for recreational purposes. This layer includes all public sidewalks (e.g. adjacent to public buildings, schools, roads, and commercial buildings, or maintained by a public entity) and public trails (e.g. in public parks, maintained by a public entity). This feature does not include private sidewalks (i.e. serving individual residences, contained within campuses, mails, or commercial complexes) except where the sidewalk maintains connectivity with the public sidewalk network. In these instances, if the private sidewalk is too complex (i.e. multiple, indirect paths or with many branches), a best-fit line is drawn to maintain connectivity with the public sidewalks. If the sidewalk widens and the centerline shifts, a "jig" is created to keep the centerline connected. The sidewalk does not stop at intersections, at parking aprons or at driveways, but these areas are delineated as separate segments within the line feature and attributed differently (e.g. for sidewalk centerlines meeting a parking apron, the portion of the sidewalk centerline within the apron is a different line segment and is attributed as an "other crossing.”) If the sidewalk crossing the parking lot is visually apparent, the sidewalk centerline continues unbroken but if not, the parking apron supersedes. For sidewalk centerlines meeting a driveway apron, the sidewalk supersedes. One intended use of this dataset is routing and modeling of pedestrian trips. ```ATTRIBUTION: Unique ID, Type (Sidewalk, Crosswalk, Missing Sidewalk, Other crossing, best-fit line). Note that “missing sidewalk” is a new domain that was not previously collected. Only new features in the 2016 dataset contain this attribute; the 2014 dataset has not been retrofitted with this attribution change.```CHANGE FEATURES: This dataset is an update to previously collected data. Features were originally delineated from 2014 aerial imagery and updated using 2016 imagery to create this dataset. Examples of change that are captured include but are not limited to: new features, change in attribution, and modifications that reach or exceed the threshold for initial collection of this feature. If studying change in the region, refer to the change status attribute to see additions and modifications. Additions refer not only to truly new features in the built environment but also to features that are added based on a larger extent of capture. Please refer to extent shapefiles for 2014 and 2016 feature captures before doing change analysis. Modifications are marked even if only a small portion of the feature has been changed. ```SOURCE DATA: This feature was compiled from DRCOG 2016 Denver Regional Aerial Photography Project (DRAPP) imagery. This imagery is 4-band RGBIR color orthoimagery with a GSD (Ground Sample Distance) of 0.5 foot for 3-inch imagery, 1 foot for 6-inch imagery, and 2 feet for 12-inch imagery. Imagery was collected in the spring with a Vexcel Ultracam Eagle aerial sensor. Imagery is projected in the State Plane Coordinate System, Colorado Central Zone using the Lambert Conformal Conic map projection parameters. Horizontal and vertical datums are NAD83(11) and NAVD88(GEOID12A), respectively.```This project was funded, in part, by Adams County, Arapahoe County, City and County of Denver, Douglas County, Jefferson County Open Space, City of Arvada, City of Aurora, Town of Bennett, City of Boulder, City of Centennial, City of Commerce City, City of Englewood, Town of Erie, City of Fort Lupton, Town of Frederick, City of Glendale, City of Golden, City of Greenwood Village, City of Littleton, City of Lone Tree, City of Louisville, City of Thornton, City of Westminster, City of Wheat Ridge, Town of Windsor, Denver Water, and RTD.

Copyright Text:

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