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Ramsey County Bridge


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Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator Ramsey County
Abstract
This data set contains overpasses and bridges.  The outlines are derived from aerial photography interpretation utilizing stereo processing techniques.  Vector line work was stereo plotted from 2009 photography.  Graphical lines contain a character based a layer name that identify the different mapping features.  The flight height for the aerial photography utilized in this project is approximately 5000 feet.  The mapping scale for aerial photography utilized in this project is 1 inch equals 833 feet.
Browse Graphic View a sample of the data
Time Period of Content Date
Currentness Reference
Data is based upon the most recent aerial photography available.
Access Constraints
This data set is available to everyone.  Fees and policy are published in the Ramsey County Fee Schedule.  Charges are variable and are subject to change.  See the Ramsey County Fee Schedule for specific information on fees and policy.
Use Constraints
The data is Copyright by the County of Ramsey.  All rights reserved.  Except as expressly provided herein, no part of this data may be copied, reproduced, sold, transferred, or transmitted in any form, or by any means, whether graphic, electronic, or mechanical, including photocopying, recording, or by an information storage or retrieval system, without express prior written permission of the County of Ramsey.
Distributor Organization Ramsey County Surveyor's Office
Ordering Instructions
Contact distributor
Online Linkage None available


Full metadata for
Ramsey County Bridge

Go to Section:
1. Identification_Information
2. Data_Quality_Information
3. Spatial_Data_Organization_Information
4. Spatial_Reference_Information
5. Entity_and_Attribute_Information
6. Distribution_Information
7. Metadata_Reference_Information

Section 1 Identification Information Top of page
Originator Ramsey County
Title Ramsey County Bridge
Abstract
This data set contains overpasses and bridges.  The outlines are derived from aerial photography interpretation utilizing stereo processing techniques.  Vector line work was stereo plotted from 2009 photography.  Graphical lines contain a character based a layer name that identify the different mapping features.  The flight height for the aerial photography utilized in this project is approximately 5000 feet.  The mapping scale for aerial photography utilized in this project is 1 inch equals 833 feet.
Purpose
Bridges in this data set support many functions including thematic mapping, asset management, property assessment, surveying and engineering projects.
Time Period of Content Date
Currentness Reference
Data is based upon the most recent aerial photography available.
Progress Complete
Maintenance and Update Frequency Scheduled to be updated every 3 years.
Spatial Extent of Data Ramsey County
Bounding Coordinates -93.233698
-92.977310
45.128159
44.883201
Place Keywords Minnesota, Ramsey County
Theme Keywords Bridges, Overpasses
Theme Keyword Thesaurus None
Access Constraints
This data set is available to everyone.  Fees and policy are published in the Ramsey County Fee Schedule.  Charges are variable and are subject to change.  See the Ramsey County Fee Schedule for specific information on fees and policy.
Use Constraints
The data is Copyright by the County of Ramsey.  All rights reserved.  Except as expressly provided herein, no part of this data may be copied, reproduced, sold, transferred, or transmitted in any form, or by any means, whether graphic, electronic, or mechanical, including photocopying, recording, or by an information storage or retrieval system, without express prior written permission of the County of Ramsey.
Contact Person Information Curt Peterson, GIS Supervisor
Ramsey County Surveyor's Office
1425 Paul Kirkwold Dr
Arden Hills , MN 55112
Phone: 651-266-7172
Fax: 651-266-7180
Email : curtis.peterson@co.ramsey.mn.us
Browse Graphic View a sample of the data
Browse Graphic File Description Not applicable
Associated Data Sets
Graphic:
Bridges (Bridges and overpasses)
Bridge Lines (Outlines of bridges and overpasses)
Dams (Locks and dams)
Dam Lines (Outlines of locks and dams)
Buildings (Structures >=80 sq. ft.)
Building Lines (Outline of structures >= 80 sq. ft.) 
Water (Open water areas)
Waterlines (Outlines of open water areas)
Water Towers 
Water Tower Lines (Outlines of water towers)
Roads (Road edges - thoroughfares and cul-de-sacs)
Railroads (Centerline of tracks)
PLS (Public Land Survey)

Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy
Feature attributes are identified using analytical and softcopy photogrammetric compilation methods.  Automated GIS processes supplement the photo identified feature attributing with the numerical parameters.
Logical Consistency
Graphical elements are topologically clean as the majority of the linework is intended to create closed boundaries or polygons.  The linework represents physical features existing at the time of data collection.

The aerotriangulation solutions, model set-ups, existing DEM reference models, and the ground control assured the integrity of the spatial relationships among the planimetric, drainage, and road features collected.
Completeness
All features of this type photogrammetrically identifiable within the Ramsey County coverage are included.
Horizontal Positional Accuracy
This data meets or exceeds the National Map Accuracy Standard (NMAS) - 1/30 of 1 inch at map scale.  Tested 2.5 feet horizontal accuracy at 95% confidence level.
Vertical Positional Accuracy
Not Applicable as it pertains to a two-dimensional Arc/INFO Coverage.  However, during feature compilation the vertical accuarcy meets NMAS - 1/6000 of flight height above mean terrain.
Lineage
This layer contains a vector representation of bridges and overpasses.  Color aerial photography and airborne GPS used for aerotriangulation.  Aerotrianglution solution used with analytical and softcopy stereo plotters to collect limited planimetric feature.  LIDAR DEM provide by Ramsey County under separate contract with Waggoner Inc. of Jackson, Mississippi was used to create digital ortho images.
Metadata imported.
Metadata imported.
Metadata imported.
Source Scale Denominator 2400

Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.3000
Geographic Reference for Tabular Data
Spatial Object Type Vector
Vendor Specific Object Types Line
Tiling Scheme

Section 4 Spatial Reference Information Top of full metadata Top of page
Horizontal Coordinate Scheme County Coordinates
Ellipsoid GRS80
Horizontal Datum NAD83
Horizontal Units Feet
Distance Resolution
County Coordinate Zone Identifier 43

Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview
Attributes are related to the creation of the bridges layer.
Entity and Attribute Detailed Citation
Entity Attributes for Polygons:
OBJECTID
feature
SHAPE
SHAPE.area
SHAPE.len

Entity Attributes for Lines:
OBJECTID
feature
SHAPE
SHAPE.len

Look Up Table: (Dxf_layer)
Bridge Types:
BRDG  Bridge

Section 6 Distribution Information Top of full metadata Top of page
Publisher Ramsey County
Publication Date
Contact Person Information David Wilford, GIS Technician
Ramsey County Surveyor's Office
1425 Paul Kirkwold Dr
Arden Hills , MN 55112
Phone: 651-266-7175
Fax: 651-266-7180
Email: david.wilford@co.ramsey.mn.us
Distributor's Data Set Identifier Ramsey County Mapping Project
Distribution Liability
DISCLAIMER
EXCEPT AS EXPRESSLY STATED HEREIN, THIS DATA IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. LICENSEE BEARS ANY AND ALL RISK RELATING TO  QUALITY AND PERFORMANCE OF THIS DATA.

Limit on Liability
This data is not a legally recorded map or survey and is not intended to be used as one. This data is a compilation of records and information from various state, county, and city offices, and other sources, and should be used for reference only.

In no event will the County of Ramsey be liable for direct, indirect, special, incidental, or consequential damages arising out of the use of, or inability to use, the data, even if advised of  the possibility of such damages.  Specifically, the County of Ramsey is not responsible for any costs including, but not limited to, those incurred as a result of lost profits or revenue, loss of use of data, the costs of recovering such programs or data, the cost of any substitute programs or data, claims by third parties, or for other similar costs. 

The sole liability of the County of Ramsey and the licensee's exclusive remedy for any substantial defect which impairs the licensee's use of the data for purposes stated herein shall be the right to terminate this license and refund any fee paid.
Transfer Format Name Geodatabase, Shapefile, Coverage
Transfer Format Version Number ArcMap 9.3
Transfer Size 0.153
Ordering Instructions
Contact distributor
Online Linkage none available

Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date
Contact Person Information Chris Ulrich, GIS Technician
Ramsey County Surveyor's Office
1425 Paul Kirkwold Dr
Arden Hills , MN 55112
Phone: 651-266-7176
Fax: 651-266-7180
Email: christina.ulrich@co.ramsey.mn.us
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.gis.state.mn.us/stds/metadata.htm


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