Massachusetts State Seal An official website of the Commonwealth of Massachusetts Here's how you know

Official websites use .mass.gov

A .mass.gov website belongs to an official government organization in Massachusetts.

Secure websites use HTTPS

A lock icon or https:// means you've safely connected to the official website. Share sensitive information only on official, secure websites.

Skip to main content

PDDG - Revision History

A catalogue of changes to the MassDOT Project Development and Design Guide, plus prior archived editions.

Summary of Changes

As elements of the Project Development and Design Guide are updated, records of changes are added here. The earliest revision for each chapter listed uses the 2006 edition of the Guide as a baseline.

Skip table of contents
You skipped the table of contents section.

Chapter 1

Open PDF file, 112.23 KB,  Revisions for Chapter 1 of the PDDG dated October 4, 2023 (English, PDF 112.23 KB)

Chapter 2

Open PDF file, 161.76 KB,  Revisions for Chapter 2 of the PDDG dated October 21, 2024 (English, PDF 161.76 KB)

Chapter 3

Open PDF file, 116.34 KB,  Revisions for Chapter 3 of the PDDG dated October 21, 2024 (English, PDF 116.34 KB)
Open PDF file, 74.93 KB,  Revisions for Chapter 3 of the PDDG dated March 13, 2025 (English, PDF 74.93 KB)

Chapter 4

Open PDF file, 127.24 KB,  Revisions for Chapter 4 of the PDDG dated October 4, 2023 (English, PDF 127.24 KB)
Open PDF file, 73.99 KB,  Revisions for Chapter 4 of the PDDG dated November 7, 2023 (English, PDF 73.99 KB)

Chapter 6

Open PDF file, 243.9 KB,  Revisions for Chapter 6 of the PDDG dated August 18, 2025 (English, PDF 243.9 KB)

Chapter 7

Open PDF file, 134.38 KB,  Revisions for Chapter 7 of the PDDG dated March 11, 2024 (English, PDF 134.38 KB)
Open PDF file, 81.12 KB,  Revisions for Chapter 7 of the PDDG dated November 3, 2025 (English, PDF 81.12 KB)

Chapter 8

Open PDF file, 155.34 KB,  Revisions for Chapter 8 of the PDDG dated January 1, 2025 (English, PDF 155.34 KB)

Chapter 9

Open PDF file, 132.41 KB,  Revisions for Chapter 9 of the PDDG dated October 4, 2023 (English, PDF 132.41 KB)

Chapter 10

Open PDF file, 105.67 KB,  Revisions for Chapter 10 of the PDDG dated October 4, 2023 (English, PDF 105.67 KB)

Chapter 11

Open PDF file, 121.91 KB,  Revisions for Chapter 11 of the PDDG dated May 7, 2025 (English, PDF 121.91 KB)

Chapter 12

Open PDF file, 107.35 KB,  Revisions for Chapter 12 of the PDDG dated October 4, 2023 (English, PDF 107.35 KB)

Chapter 13

Open PDF file, 138.2 KB,  Revisions for Chapter 13 of the PDDG dated October 4, 2023 (English, PDF 138.2 KB)

Chapter 14

Open PDF file, 109.32 KB,  Revisions for Chapter 14 of the PDDG dated February 22, 2024 (English, PDF 109.32 KB)

Chapter 15

Open PDF file, 84.39 KB,  Revisions for Chapter 15 of the PDDG dated March 15, 2025 (English, PDF 84.39 KB)

Chapter 16

Open PDF file, 113.94 KB,  Revisions for Chapter 16 of the PDDG dated January 3, 2025 (English, PDF 113.94 KB)

Chapter 18

Open PDF file, 145.91 KB,  Revisions for Chapter 18 of the PDDG dated April 30, 2026 (English, PDF 145.91 KB)
Open PDF file, 79.43 KB,  Revisions for Chapter 18 of the PDDG dated June 15, 2026 (English, PDF 79.43 KB)

Superseded Editions

Prior editions of the Guide are archived here for historical reference.

Open PDF file, 19.76 MB,  2006 Project Development and Design Guide (English, PDF 19.76 MB)
Open PDF file, 3.81 MB,  Addenda to the 1997 Highway Design Manual (English, PDF 3.81 MB)
Open PDF file, 9.36 MB,  1997 Highway Design Manual (Metric Edition) (English, PDF 9.36 MB)

Help Us Improve Mass.gov  with your feedback

Please do not include personal or contact information.
Feedback