Design Memoranda

04/04/2022 - Performance-Based Decision-Making using the Highway Safety Manual (PDF)

• Attachment 1 - Performance-Based Decision-Making Guidelines using the Highway Safety Manual (PDF)

03/25/2022 - Accommodation of Wired Broadband Facilities Within Access-Controlled State Highway Right of Way (PDF)

• Attachment A: 03/14/2022 – Accommodation of Wired Broadband Facilities Within Access-Controlled State Highway Right of Way (PDF)
• Attachment B: 03/15/2022 – Guidance for Broadband Installation on Bridges (PDF)

11/05/2021 - Implementation of Integrated Construction Contract Standards Publication (PDF)

6/01/2021 - Planting Policy

02/11/2021 - Complete Streets Decision Document - Implementation (PDF)

09/11/2020 - Approval and Documentation of Constructed Non-Approved Non-Standard Design Features (PDF)

• 07/24/2020 Decision Document: Approval and Documentation of Constructed Non-Approved Non-Standard Design Features (PDF)
• Attachment 1:  Interim Guidance (PDF)
• Attachment 2:  Non-Standard Features Template (DOCX)

07/01/2020 - Interim Guidance Regarding Incorporating Overhead Utility Information on Contract Plans (PDF) 

06/30/2020 - Bikeway Facility Selection Guidance (PDF) 

• Attachment:  03/11/2020 - Contextual Guidance for Bike Facilities (PDF)

03/06/2020 - Archive Use - Non-Standard Special Provision (NSSP) Process Improvement (PDF) 

10/02/2019 - Design Information Bulletin (DIB) 79-04 - Supersedes DIB 79-03 (HTML) 

10/02/2019 - Design Information Bulletin (DIB) 81-02 - Supersedes DIB 81-01 (HTML)

08/31/2018 - Caltrans Memorandum - Implementation of the 2018 Construction Contract Standards (PDF)

05/03/2018 - Design Information Bulletin (DIB) 89-01 - Supersedes DIB 89 (PDF)

11/16/2017 - Design Information Bulletin (DIB) 82-06 - Supersedes DIB 82-05 (PDF)

09/12/2017 - Archiving Project Records Utilizing Document Retrieval System (PDF)

12/23/2016 - Implementation of the Manual for Assessing Safety Hardware (MASH) (PDF)

07/15/2016 - Implementation of Rock Slope Protection (RSP) Design (PDF)

02/02/2015 - CTC Action on Route Adoptions and New Public Road Connections (PDF)

09/19/2014 - Microstation - Caltrans Standard Drafting Software (PDF)

06/26/2014 - Water Conservation for Highway Construction Projects (PDF)

04/10/2014 - Design Flexibility in Multimodal Design (PDF)

03/11/2014 - Evaluation of Current Planting Work (PDF)

03/04/2014 - Division of Construction CPD 14-1 Water Conservation (PDF)

02/27/2014 - Implementation of Civil 3D (PDF)

11/25/2013 - Electrical Design Standards for Advertised Projects (PDF)

06/07/2013 - Division of Design Policy Updates (PDF)

02/26/2013 - Constructability Reviews (PDF)

10/05/2012 - Americans With Disabilities Act (ADA) Compliance (PDF)

06/11/2012 - Additional Guidelines on Curb Ramp Scoping and Design (PDF)

01/09/2009 - Small Capital Value Projects - Project Initiation Documents (PDF)

06/16/2008 - Implementing Assembly Bill 1531(PDF)

03/07/2007 - Use of Life Cycle Cost Analyses for Pavements (PDF)

08/11/2006 - Preparing Pending Projects for Advertisement (PDF)

06/16/2006 - Declaration of Units of Measure - "English" or "Metric" Project (PDF)

04/07/2006 - Archiving As-Built Plans (PDF)

01/26/2006 - District Stewardship Responsibilities for Federally Eligible State Highway Projects (PDF)

12/14/2005 - Certification of Project Cost Estimate (PDF)

10/04/2005 - Relinquishment of State Highways by Legislative Enactment (PDF)

09/15/2005 - Engineer Estimates (PDF)

08/02/2005 - U.S. Customary Units (English) Primer (PDF)

04/29/2005 - Cooperative Agreements (PDF)

02/21/2005 - Metric to U.S. Customary Units (English) Transition Team and Website (PDF)

11/17/2004 - Implementation and Distribution of the July 2004 Standard Plans (PDF)

08/27/2004 - CADD Users Manual Update (PDF)

08/20/2004 - Metric to U.S. Customary Units (English) Transition (PDF)

07/30/2004 - Cross-Section Preparation and Delivery (PDF)

06/28/2004 - Longer-Life Pavements (PDF)

06/21/2004 - Bid Item Price Escalation (PDF)

12/16/2003 - Project Shelf Guidance (PDF)

12/09/2003 - Hazardous Material Remediation for Special Funded and Jointly Funded Projects (PDF)

12/05/2003 - Processing of Department Resolutions of Necessity (RON) through the California Transportation Commission (CTC), County Board of Supervisors (Board) or City Councils (Council) (PDF)

10/03/2003 - Revised Design Information Bulletin (DIB) 80 - Roundabouts - RETIRED - See Highway Design Manual Chapter 400 (PDF)

07/23/2003 - Clarification of Value Enhancement for New Public Road Connections to Controlled Access Highways (PDF)

11/26/2002 - Tire Shreds in Civil Engineering Applications (PDF)

11/26/2002 - Resolution of Necessity (First and Second Level Reviews) Guidelines for Local Agencies Performing Work on the State Highway System (PDF)

09/30/2002 - Guidelines for Use of A+B Bidding Provisions (PDF)

09/27/2002 - Reaffirmation of Metric Policy (PDF)

09/25/2002 - Caltrans Storm Water Quality Handbook - Project Planning and Design Guide (PDF)

05/24/2002 - Memorandum of Understanding for Perfection of Title along Existing Segments of Highway Through United States Forest Service Lands in the State of California (HTML)

04/25/2002 - Exception to High and Low Risk Policy for the Statewide Exit Number and Vertical Clearance Sign Projects (PDF)

03/26/2002 - Purpose, Application and Approval Authority for Exceptions to Design Standards (PDF)

12/12/2001 - Designated Disposal, Staging, and Borrow Sites (PDF)

12/10/2001 - Local Agency Guideline for Right of Way Acquisition on State Highway System and Contracting Out (PDF)

08/09/2001 - PSR (PDS) Guidance: Project Initiation Documents for Project Development Support Components PSR (PDS) Exception Fact Sheet (PDF)

03/06/2001 - Use of 200-mm vertical extension on Type 50 Barrier (PDF)

02/28/2001 - Construction Contract Time (PDF)

06/12/2000 - Delegation of Authority for Use of A+B Bidding and Incentive/Disincentive (I/D) Provisions (PDF)

 02/04/1998 - Project Engineer Responsibilities (PDF)