This document contains the transmittal memos dating to 1996.
The following log summarizes the changes made to the manual since 2005.
| Date | Transmittal | Chapter | Description |
|---|---|---|---|
| July 2018 | 2018 | 5 | New section 5.4.6 and other minor updates |
| February 2018 | 1, 12 | Minor updates throughout, expanded Section 1.3 on Risk. | |
| December 2014 | 16 | 10 | Minor updates throughout, added Section 10.3.8 on Non-Destructive Evaluation. |
| January 2014 | 15 | 1, 3, 4, 6, 7, 9, 12 | Updated Sections 1.1.4, 1.1.5, 1.2.5, 1.4.1, 4.3, 4.6 to 4.9, 7.1, 7.3 to 7.5 and much of Chapter 9. Formatting changes, typo fixes, link updates, and units rearranged as US Customary [Metric] was accomplished in all chapters. |
| January 2014* | - | 2, 3A, 5, 5A, 8, 10, 11, 13 | Formatting changes, typos fixed, link updates, and units rearranged as US Customary [Metric] |
| March 2008 | 14 | All | PDDM completely rewritten. Additional chapters for Pavements (Chapter 11) and Right-of-Way (Chapter 12) added. |
| June 2005 | 13 | All | Previous edition of PDDM converted to dual units (Metric and US Customary). Minor corrections made. Hyperlinks added. |
* Minor change. Date not changed in file.