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Design Bulletins

Updated on May 3, 2019.
Superseded Design Bulletins
File 2019 CDOT Engineering Estimate Request
2019-3. May 8, 2019. The Engineering Estimates and Market Analysis (EEMA) Branch is implementing a new process to request Engineering Estimates for projects.
File Form 463 Changes “Go-Live” May 16th
2019-2. May 3, 2019. An implemented Form 463 improvement suggestion from region management will be reflected in SAP beginning May 16, 2019. This new format would more clearly highlight instances where design standards are not being met in the proposed condition.
File Revisions to Standard Specifications 107.25 and 208 - Water Quality Control and Erosion Control
2019-1. March 28, 2019. The purpose of this Bulletin is to provide information and instruction regarding the revisions to Standard Specifications 107.25 and 208 issued on March 27, 2019. Changes to these specifications were made to ensure compliance with the Colorado Department of Public Health and Environment’s (CDPHE) new Colorado Discharge Permit System General Permit for Stormwater Discharges Associated with Construction Activities (SCP) (COR400000).
File 2018 CDOT Roadway Design Guide (RDG)
2018-7. October 25, 2018. The 2018 release of the CDOT Roadway Design Guide (RDG) is synchronized with the AASHTO 2011, "A Policy on Geometric Design of Highways and Streets, 6th Edition" (Green Book).
File Modified Form 464 - Design Exception Variance Request
2018-6. October 3, 2018. This modified Form 464 reflects that designers are encouraged to support design exception variance requests with Data Driven Safety Analysis (DDSA) when practical.
File ADA Accessibility Reqs. PD 605.1 [Form 464 Ref. Removed]
2018-5. Form #464 references have been deleted from the Procedural Directive 605.1 since the form is no longer used for curb ramps
File New CDOT Roadway Design Guide Ch 12 - Accessible Pedestrian Design
2018-4. July 30, 2018. This is the new Chapter 12, "Accessible Pedestrian Design" for the CDOT Roadway Design Guide. It is derived from the Public Rights-of-Way Accessibility Guidelines (PROWAG). Topics range from general ADA requirements to a deeper dive on curb ramp and pedestrian access route technical requirements. Designers and field staff are strongly encouraged to familiarize themselves with the range of Americans with Disabilities Act (ADA) topics.
File New Form 463 “Go-Live” June 4th
2018-2. May 17, 2018. This Design Bulletin is the final notification for additional input to Form 463.​ It is ​a follow up to Design Bulletin 2018-1 issued on May 2, 2018.
File New Form 463 “Go-Live” June 4th
2018-1. May 2, 2018. The FHWA controlling criteria for design, changed from 13 to 10 in mid-2016. Outreach to the regions via the Project Delivery Advisory Committee (PDAC) regarding Form 463 redesign began in early 2017. The new Form 463 currently in SAP production, obtained PDAC approval in February. Please read this bulletin to find more highlights.
File Noise Guide Changes
2017-01. April 10, 2017. This bulletin aligns Colorado noise standards with national standards.
File 3D Engineered Construction Surveying
2016-4. May 13, 2016. CDOT is now able to provide 3D modeling information to Contractors to be used during bidding and construction, provided the project meets specified criteria.
File Estimate Review by EEMA Unit
2016-3. March 28, 2016. The description of the duties and function of the Engineering Estimates and Market Analysis Unit has been updated in Section 2.27 of the Project Development Manual with a total rewrite of that section.
File Reporting New Permanent Water Detention or Filtration Facilities
2016-02. January 26, 2016. Per a modification to a Colorado Revised Statute, CDOT must notify all parties (via reporting on a website) during the design of the project of any new permanent water detention or filtration facilities intended to be put into service after August 2015.
File TSM&O Evaluation
2016-1. January 21, 2016. Beginning January 1, 2016 all projects with a Design Scoping Review on or after February 1, 2016 will require a Transportation Systems Management and Operations (TSM&O) Evaluation.
File Project Risk Management
2015-10. December 9, 2015. Currently, CDOT Project Managers, Project Engineers, and Project Teams inherently consider project risks throughout the lifecycle of a project. This guidance provides a process and framework to help define and manage risks as well as risk management tools.
File Bicycle and Pedestrian Facilities
2015-09. November 5, 2015. Chapter 14 "Bicycle and Pedestrian Facilities" of the CDOT Roadway Design Guide has been revised.
File Office Word 2007 XML document PS&E Revisions Under Ad Process Instructions
2015-8. October 9. 2015. To provide consistency and uniformity to the Revision Under Advertisement process, significant details have been added to Section 2.34 of the Project Development Manual. The changes include an example revision request letter and detailed instructions on how to mark up and complete the bid documents, special provisions, and plan sheets associated with a change.
File PS&E Package to FHWA
2015-7. Revised on October 9, 2015. In order to not delay going to ad, the PS&E (Plans, Specifications and Estimate) Package for projects of Division Interest (PoDI) must be sent to FHWA two weeks before beginning the Form 1180 process. FHWA now requires that the PS&E package be delivered in paper format.
File Materials for Noise Barrier Walls
2015-6. August 17, 2015. Chapter 18 Noise Guide of the CDOT Roadway Design Guide has been revised and expanded to present more detailed information about the materials used in the construction of noise barrier walls.
File Tracking Permanent Water Quality Mitigation Pool Money
2015-5. August 17, 2015. The purpose of this bulletin is to provide direction on tracking Permanent Water Quality (PWQ) project money. A project follows this procedure anytime PWQ Mitigation Pool funds are used (including local agency projects). This bulletin supersedes Design Bulletin 2014-12: Permanent Water Quality Mitigation Pool Combination Projects and Construction Bulletin 2014-6: Permanent Water Quality Mitigation Pool.
File Policy on Context Sensitive Solutions
2015-4. June 8, 2015. Policy Memo 26 Context Sensitive Solutions (CSS) Vision for CDOT, issued October 31, 2005 has been replaced by a new subsection of Section 8 in the Project Development Manual.
File Policy on Ensuring Bidding Competition
2015-3. May 4, 2015 (Revised on May 29, 2015 with correct the Transport coding). Information on Cut Back and Multiple Schedule Projects.
File Policy on Warranty Provisions
2015-2. May 4, 2015. Information about Special Provisions.
File Reducing Construction Duration and Minimizing User Impacts and Delays
2015-1. January 22, 2015. This design bulletin is intended to ensure that every CDOT project gives appropriate consideration to the use of innovative contracting measures to accelerate project completion, as appropriate, that will aid in reducing the impacts of construction to the traveling public.
File Use of Engineering Judgment and MUTCD Request Options
2014-15. December 18,2014. This bulletin provides guidance on how and when engineering judgment may be used to deviate from the MUTCD standards and provides an overview of the various FHWA requests associated with the MUTCD.
File Naming Conventions for Scopes, Schedules, and Cost Estimates
2014-14. December 8, 2014. This bulletin provides guidance on naming conventions for project-level scopes, schedules and cost estimates in ProjectWise.
File Railroad Clearance for CDOT Projects
2014-13. October 22, 2014. FHWA has requested that a statement regarding the completion, or arrangement for, any railroad work within CDOT projects be made prior to the advertisement of the project per 23 CFR 635.309(b). The statement will be made typically by the Region Utility Engineer or the Resident Engineer.
File Guidelines for FIPI and Certification Procedures
2014-11. September 22, 2014. The purpose of this Design Bulletin is to provide guidance for Findings in the Public Interest (FIPI) and the Certification Processes for Propretary Items.
File Guidelines for Mandatory Pre-bid Conferences
2014-10. August 25, 2014. The purpose of this Design Bulletin is to provide guidance for Mandatory Pre-bid Conferences.
File Updated Work Zone Safety and Mobility Rule Procedures Document
2014-9. July 16, 2014. CDOT has updated the Work Zone Safety and Mobility (WZSM) Rule Procedures Document, dated July 2014.
File Soil Retention Coverings
2014-8. Revised on July 27, 2015. This design bulletin replaces the guidance in the Erosion Control and Stormwater Quality Guide, Chapter 5, Sections EC 5 and 6, and provides design staff with guidance on how to select and place Soil Retention Coverings on slopes and in roadside ditches in accordance with new Standard Special Provision, “Revision of Section 216 – Soil Retention Covering”.
File Troff document Project Specifications Assembly Tool
2014-7. Revised on October 1, 2014. The purpose of this Design Bulletin is to provide CDOT designers with the updated tool that is a more efficient way to assemble their Specification Package for their advertisement set.
File LandXML Files for Contractors for Bidding Purposes
2014-6. May 8, 2014. This Design Bulletin provides guidance to designers regarding the change to the Project Special Provision Revision Of Section 102, Project Plans and Other Data that establishes the mechanism whereby CDOT provides electronic documents to assist Contractors in understanding the larger earthwork aspects of the job.
File Noise Regulation Revisions
2014-5. April 04. 2014. The Federal Highway Administration (FHWA) has changed several key elements of how noise impacts and noise mitigation are assessed and applied to federal projects.
File SAP Milestone Schedule
2014-4. Revised on December 11, 2015. (Supersedes DB-2014-4, November 24, 2015). This Design Bulletin defines the 7 minimum milestone dates needed for the Office of Program Management. It is important to standardize project milestones in order to make communication of project information and reporting better at a regional and statewide level.
File Milestone Dates in SAP Project Builder (CJ20N)
2014-3. February 10, 2014. This Design Bulletin explains the importance of entering milestone data into SAP and details the proper procedures for doing so.
File text/texmacs Go Sheet (ZJ44), Accurate Advertising Dates, and Ad Certainty
2014-2. February 04, 2014. CDOT has created a new and improved CDOT Go Sheet. The Go Sheet is published weekly and informs contractors about upcoming bid openings for CDOT construction projects.
File Estimating Drawdown Schedules
2014-1. Revised on July 24, 2015. This bulletin provides interim guidance on how to develop anticipated construction drawdown schedules during design, and identifies technical support resources.
File Construction Phasing
2013-5. November 19, 2013. This bulletin provides guidance for design staff in addressing construction phasing in our plans and specifications for design-bid-build projects.
File Trns*port™ (now called AASHTOWare) and Combination Projects
2013-4. September 24, 2013. Multiple Projects may now be combined under one Contract/Proposal in the Trns*port Project modules.
File CDOT Design Phase Value Engineering (VE) Program
2013-3. August 30, 2013. This design bulletin provides guidance on CDOT’s statewide Value Engineering (VE) program, and supersedes the Project Development Manual (PDM), Section 2.15, “VALUE ENGINEERING (DURING DESIGN PHASE)”.
File Project Cost Estimates and Federal Authorization
2013-2. March 29, 2013 (Supersedes Design Bulletin 2009-1). The Project Development Manual (PDM), Section 1.04.02, “Federal Authorization and Budgeting,” has been modified to clarify CDOT’s implementation of Federal requirements for a documented Project Cost Estimate when the FHWA authorization of Federal funds is requested.
File Preparing an Independent Cost Estimate for Consultant Services
2013-1. March 29, 2013. The Project Development Manual (PDM) Sections 1.05.01, “Obtaining a Consultant Contract” and 1.05.02, “Preparing an Independent Cost Estimate for Consultant Contracts,” have been modified to clarify CDOT’s implementation of Federal requirements for an Independent Cost Estimate (ICE) for Consultant Contracts.
File Standard Plans List Checking Procedure
2012-4. December 13, 2012. Provides guidance on the procedure for checking the M&S Standard Plans List that is included with all plan sets.
File Transfer of Stormwater Permit to Contractor
2012-2. April 26, 2012. This design bulletin provides information to assist design staff in implementing revised Policy Memo 27.
File Safety Edge
2011-04. September 23, 2011. This design bulletin replaces the typical sections in the CDOT Roadway Design Guide with typical sections that show the pavement being constructed with a sloped safety edge as described in the new standard special provision, Revision of Sections 401 and 412, Safety Edge.
File Assigning Pavement Smoothness Categories
2011-3. February 18, 2011. (Revised on January 12, 2017). This design bulletin provides guidance to designers for assigning pavement smoothness categories for hot mix asphalt and Portland cement concrete pavements.
File Office Word 2007 XML document Protection of Migratory Birds
2011-2. February 03, 2011. This Design bulletin adds Section 2.27 to the Project Development Manual. Section 2.27 provides guidelines and strategies during project development to ensure that appropriate and reasonable measures are included in the Contract to prevent the taking of migratory birds and to avoid civil and criminal penalties associated with non-compliance with the Migratory Bird Treaty Act (MBTA).
File application/ms-word Permissible Activities during the NEPA Process
2011-1. February 01, 2011. (Revised on December 22, 2011). This bulletin revises Section 2.01 of the Project Development Manual to provide guidance to CDOT personnel on what activities may be advanced during the NEPA process in conformance with the order.
File Combined Bridge Enterprise and CDOT Funded Projects
2010-8. October 21, 2010. This design bulletin assist the regions with designing and constructing projects while meeting the needs of the business office when handling co-funded Bridge Enterprise-CDOT projects.
File application/ms-word Non-Compliant Contract Provisions
2010-3 . March 8, 2010. Provides information and instructions regarding non-compliant contract provisions that have been included on several federally funded Local Agency projects.
File application/ms-word Local Agency Project Specification Review & Approval Process
2010-2. March 8, 2010. The CDOT Standards and Specifications Unit (SSU) will support the Regions by reviewing the project specification submittal packages for Local Agency administered projects as it currently does for CDOT administered projects.
File application/ms-word Project Special Provisions
2009-5. June 18, 2009. Remind designers and other special provision writers of CDOT’s policies regarding use of new or revised project special provisions on CDOT construction projects.
File application/ms-word Process to Obtain FHWA Authorization before Advertising CDOT Projects
2008-3. November 13, 2008.
File application/ms-word Project Naming Convention
2008-2. July 30, 2008.
File application/ms-word Guidance for Advertising Resurfacing Projects
2008-1. May 22, 2008.
File application/ms-word Overlay Exemption from MS4 requirements
2007-5. December 7, 2007.
File application/ms-word Changes to the Requirements for Major Projects
2007-4. November 8, 2007.
File application/ms-word Separate Bid Items for Removal of Pavement Marking and Pavement Marking Paint
2007-3. July 18, 2007.
File application/ms-word Mitigation of Bumps in Overlays
2006-2. March 10, 2006.
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