SUBDISTRICTS is a polygon layer showing the INDOT management subdistricts. The mapping units include the district name and district number codes and the subsidtrict names. Revisions were made to the Subdistrict boundaries in both LaPorte and Seymour Districts. The changes to Seymour were reviewed and approved by Kathy Eaton-McKalip, and became effective January 1, 2011 . The changes for LaPorte were submitted, reviewed and approved by Oswald, Derek effective 5/24/2011.

Revision to the Fort Wayne SubDistrict boundaries effective July 1 2012. The Wabash Unit 4 has been moved from the Warsaw Subdistrict to the Elkhart SubDistrict as Unit 2. The revised boundaries was provided by Eleachea Sanders vie e-mail dated Friday, June 08, 2012.

There has been a recent changes to the Sub-District Boundaries in LaPorte. The Plymouth Sub is being removed and the Units have been Absorbed into LaPorte and Winamac. These changes were completed per request from Derek Oswald in e-mail dated 1/8/2013.

New Changes to Fort Wayne Subdistricts.

Starting the week of January 20th (1/20/2013), the Fort Wayne Highway Maintenance (HM) section will be adjusting from five subdistricts to four. The subdistricts that remain will be Elkhart, Fort Wayne, Wabash, and Bluffton. The units of the former Angola subdistrict will now be part of the Fort Wayne and Elkhart subdistricts. Angola unit and Waterloo unit will be part of Fort Wayne. Brimfield unit will be part of Elkhart. In addition to the above changes, the Laud unit that is currently part of the Fort Wayne subdistrict will be making a reporting change as well. Laud will now be part of the Wabash subdistrict . The shop at Angola will continue operations in the subdistrict facility.

Subdistricts are now derived from the DOTGIS.UNITS layer which was last modified July 20, 2020 to accomodate WMS naming conventions.