FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
(VERSION 2003)
HISTORIC BRIDGES
Geodataset Name: SHPO_BRIDGES Geodataset Type: SHAPE Geodataset Feature: LINE
GENERAL DESCRIPTION:
This dataset contains historic bridge locations and basic bridge attributes as recorded at the Florida Master Site File.
DATA SOURCE(S): Bureau of Archaeological Research SCALE OF ORIGINAL SOURCE MAPS: 1:100,000 DATE OF AUTOMATION OR SOURCE: September 2002 GEODATASET EXTENT: State of FloridaFEATURE ATTRIBUTE TABLES:
Datafile Name: SHPO_BRIDGES.DBF ALIAS WIDTH TYPE PRECISION Shape 9 SHAPELINE 0 Fnode 11 DECIMAL 0 Tnode 11 DECIMAL 0 Lpoly 11 DECIMAL 0 Rpoly 11 DECIMAL 0 Length 20 DECIMAL 5 Bridges 11 DECIMAL 0 Bridges_id 11 DECIMAL 0 Siteid 8 CHARACTER 0 Formno 6 CHARACTER 0 Sitename 40 CHARACTER 0 Surveynum 5 CHARACTER 0 Fdotnum 7 CHARACTER 0 Yrbuilt 5 CHARACTER 0 Condition 4 CHARACTER 0 Br_length 5 CHARACTER 0 Engineers 70 CHARACTER 0 Ownership 50 CHARACTER 0 Br_design1 40 CHARACTER 0 Br_design2 40 CHARACTER 0 Material_1 20 CHARACTER 0 Material_2 20 CHARACTER 0 In_use 4 CHARACTER 0 D_nrlisted 8 DATE 0 Shpo_eval 30 CHARACTER 0 Descript 40 CHARACTER 0
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
ITEM ITEM DESCRIPTION
SHAPE Data attribute inherent to the ESRI shapefile format, which defines
the data as a point, polyline, or polygon.
FNODE Arc/Info generated vector data (from node #)
TNODE Arc/Info generated vector data (to node #)
LPOLY Arc/Info generated vector data (left poly #)
RPOLY Arc/Info generated vector data (right poly #)
LENGTH Length of the arc in coverage units
BRIDGES Arc/Info internal id number
BRIDGES-ID Arc/Info user id number
SITEID This is the state site number (used as the primary key for all Site
File databases relating to cultural resources). The state site
number is an eight character string containing a two character
county code, a five character numeric code ranging from 00001 to
99999, and an optional single letter character (suffix letter is
generally used to indicate sites that are functionally or spatially
related).
FORMNO Undefined by source.
SITENAME The bridge name as recorded at the Florida Master Site File. This
is usually the principal or best known name for a cultural resource.
SURVEY_NO The serial number assigned by the Site File to the report or
manuscript produced by the survey or project which identified or
reexamined the cultural resource. A blank value for this field
indicates that there is no associated report or manuscript for the
bridge.
FDOT_NO The FDOT number is six positions in length, with the first two
numbers as the defining code for the county. The remaining four
positions are used as a unique number for the bridge within the
county. A zero value for this field indicates there is no FDOT
number for the bridge.
YRBUILT The initial date of the bridge's physical construction. A value
of 'UNKN' for this field indicates the year of construction is
unknown.
CONDITION The overall condition of the bridge.
BR_LENGTH Overall length of the bridge in feet.
ENGINEERS The primary designers/engineers of the bridge if known.
OWNERSHIP Ownership type.
BR_DESIGN1 Bridge design.
BR_DESIGN2 Additional bridge design.
MATERIAL_1 Construction material.
MATERIAL_2 Additional construction material.
IN_USE Indicates whether or not the bridge is currently in service. Yes
for in service, No for not in service and a blank value if not
recorded.
D_NRLISTED Date the bridge was listed on the National Register of Historic
Places. If this field is blank, the structure is not listed.
SHPO_EVAL Evaluation of Florida's State Historic Preservation Officer (SHPO)
concerning the eligibility of the resource for listing on the
National Register of Historic Places. In Florida, the SHPO is the
Director of the Division of Historic Resources, acting through his
staff in the Bureau of Historic Preservation. *NOTE: Values in
these fields are limited to a discrete list of possibilities used
in the Site File Smartform program. A list of these values can be
found in the field descriptions included in the bridge Smartform,
available at http://dhr.dos.state.fl.us/msf/smartform.html.
Descript Based on SITENAME.
USER NOTES:
LIMITATIONS OF THE DATA/WARNINGS TO THE USER: The historical bridge data are based on field reports which have been submitted by many and varied individuals, groups, institutions, and cultural resource firms. Submissions to the Site File are sometimes accepted from amateurs as well as professionals. The locations are only as accurate as the locational information submitted to the Site File by the site recorder. The accuracy of submitted information cannot always be verified. The absence of a cultural resource in this data layer does not preclude the existence of an unrecorded resource in the field. The bridges recorded at the Site File represent only a fraction of the historic bridges present statewide. The locations of archaeological sites, historic structures, unmarked human burials, bridges, and other cultural features contained in this (and other) Site File data layers are for resource management, law enforcement, and research purposes only. State law protects archaeological remains on state owned and controlled lands (section 267.13, Florida Statutes). State law protects human burial sites on all lands (sections 872.02 and 872.05, Florida Statutes). Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modelling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:250000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analyses. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our web pages at: http://www.geoplan.ufl.edu/education.html
FGDL QUALITY ASSURANCE STATUS:
-Set Tolerances to FGDL Standards -Added DESCRIPT field based on SITENAME -Projected to FGDL albers
REFERENCES:
DATA LINEAGE SUMMARY:
This data was originally created by the Division of Historical Resources. The data was received on a CDrom in Coverage format. The data was released in September 2002. When received, the data was in the following projection: Geographic, Datum: NAD27, Spheroid: Clarke 1866, Units: Decimal Degrees. The shapefile was projected to FGDL Albers HPGN (See "Map Projection Parameters" below) in ArcToolBox using the Florida Harn Transformation.
MAP PROJECTION PARAMETERS:
Projection ALBERS Datum HPGN Units METERS Spheroid GRS1980 1st Standard Parallel 24 0 0.000 2nd Standard Parallel 31 30 0.000 Central Meridian -84 00 0.000 Latitude of Projection's Origin 24 0 0.000 False Easting (meters) 400000.00000 False Norting (meters) 0.00000
DATA SOURCES CONTACT(S):
Name: Vincent S. Birdsong or Dr. Marion Smith
Florida Master Site File
Address: Bureau of Archaeological Research
R. A. Gray Building
500 South Bronough St.
Tallahassee, FL 32399-0250
Phone: (850) 245-6440
Fax: (850) 245-6439
Email: General Site File: fmsfile@mail.dos.state.fl.us
Site File Supervisor: msmith@mail.dos.state.fl.us
FGDL CONTACT:
Name: Florida Geographic Data Library
Abbr. Name: FGDL
Address: Florida Geographic Data Library
431 Architecture
PO Box 115706
Gainesville, FL 32611-5706
Web site: http://www.fgdl.org
Contact FGDL:
Technical Support: http://www.fgdl.org/fgdlfeed.html
FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html
FGDL Mailing Lists: http://www.fgdl.org/fgdl-l.html
For FGDL Software: http://www.fgdl.org/software.html