The supporting documents zip file should contain all the relative documents pertaining to the project. This is specified in section 1600 of L&D vol 3 manual.
This included an index file, all cadd files, Alignment Files, Surface Files, Engineering Data, and Survey Data.
To assist in the creation of the zip file containing supporting documents, the OHDOTCEv02_Indexer application has been created. Please see our wiki page here over on the Custom Applications section of our Wiki for how to use the OHDOTCEv02_Indexer application.
While the wiki page on the OHDOTCEv02_Indexer application will show how to use the app to create a zip file, it does not show how to create some of the files required to be included in the zip file. Below are links to wiki pages that show how to create some of these required files. For more details, please see the Guidelines for Electronic Design Deliverables document.