Aviation data
Data available in shapefile and KML formats.Contains locations and information on airports, heliports and runways. Metadata is under construction.
Contact
Michael Marr
Phone: 515-239-1468
E-mail: Michael.Marr@dot.iowa.gov
Boundary data
Data available in shapefile and KML formats.Contains county, state, city regional planning affiliations (RPA), MPO, urban area, Iowa DOT PLSS sections and transportation districts.
Boundary metadata HTML and FGDC compliant XML
Contact
Ryan Wyllie
Phone: 515-239-1560
E-mail: Ryan.Wyllie@dot.iowa.gov
GIMS - road centerlines, structures and rail crossings
Contains road centerlines, structures and rail crossing and business data.GIMS metadata HTML and FGDC compliant XML
Contact
Michael Clement
Phone: 515-239-1826
E-mail: Michael.Clement@dot.iowa.gov
County highway and transportation maps in geo-referenced TIFF SPCS83 Iowa South and Iowa North in meters
Contains geo-referenced TIFF highway and transportation maps.Contact
Mark Hansen
Phone: 239-1990
E-mail: Mark.Hansen@dot.iowa.gov
Rail (excluding crossings)
2002 Iowa rail lines. Crossings information is available at the above link.Railroad metadata
Contact
Eric Abrams
Phone: 515-239-1723
E-mail: eric.abrams@dot.iowa.gov
Linear referencing system (LRS)
Reference posts.Contact
Ryan Wyllie
Phone: 239-1560
E-mail: Ryan.Wyllie@dot.iowa.gov
Trails
Contains trails and business data. Metadata is under construction.Contact
Milly Ortiz
Phone: 515-233-7733
E-mail: Milly.Ortiz@dot.iowa.gov.
Program management
Contains Iowa DOT five-year program data. Metadata is under construction.Contact
Don Tebben
Phone: 515-239-1148
E-mail: Donald.Tebben@dot.iowa.gov
Download file information
All vector posted data are in:
GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",
SPHEROID["WGS_1984",6378137.0,298.257223563]],
PRIMEM["Greenwich",0.0],
UNIT["Degree",0.0174532925199433]]
For Iowa DOT downloads that do not have a projection file, you can right click and select "Save As"; rename to match your downloaded shape fle.
GeoTIFF files are in:- State Plane Cooridinate System 1983 - Iowa North (1401) - in meters - for all counties in the north plane
- State Plane Cooridinate System 1983 - Iowa South (1402) - in meters - for all counties in the south plane
Year 2005 GeoTIFFs have a LZW compression. Arcview 3.3 does not read images with this compression unless a new dll is installed, see http://support.esri.com/index.cfm?fa=knowledgebase.techArticles.articleShow&d=27185 for instructions.