Department Order
| Series | No | Title | Date | Supersedes |
|---|---|---|---|---|
| 1973 | 4 | Creating a separate Highway Engineering District in the Sub-province of Aurora. | January 15, 1973 | - - - |
| 1973 | 3 | Creating a separate Highway Engineering District in the Sub-province of Biliran. | January 15, 1973 | - - - |
| 1973 | 2 | Dividing the Province of Surigao del Norte into two (2) Highway Engineering Districts. | January 15, 1973 | - - - |
| 1973 | 1 | Dividing the Province of Bohol into two (2) Highway Engineering Districts. | January 15, 1973 | - - - |
| 26 | 2017 | DPWH Standard Specification for ITEM 728 - High Flow Epoxy Mortar for Submerged and Wet Concrete Structures. | March 2, 2017 | - - - |
| 17 | 2020 | Authorities and Areas of Responsibilities of DPWH Key Offiicials. | January 21, 2020 | - - - |