Business Center

Chief Engineer Memos

December 1, 2019. Issuance of Statewide Six (6) Inch Striping Standard Plan

CDOT will be upgrading current four (4) inch longitudinal pavement markings to six (6) inch longitudinal markings on all CDOT highways.

December 18, 2019. EPA Audit finding - Compliance with Specification 208.09

Re-issuance of the Chief Engineer's memo: EPA Audit Finding - Compliance with Specification 208.09 - Failure to perform erosion control, dated March 28, 2016. This reissued memo is to announce the stormwater management process changes initiated by the findings of an Environmental Protection Agency (EPA) audit and follow-up inspection.  Construction Bulletin 2016-2 Water Quality Control

September 10, 2019. Formal Adoption of AASHTO 2018 PDGHS (Green Book)

This memorandum formally adopts the AASHTO 2018, A Policy on Geometric Design of Highways and Streets, 7th Edition (PGDHS or Green Book) that hereby supersedes the PGDHS, 6th Edition. While designers should immediately begin using the 2018 Green Book on all CDOT highway projects, a one year transition period will be provided. All CDOT highway projects advertised after October 1, 2020 shall be designed per the 2018 Green Book.

Dec. 10, 2018. Implementation of Project First - Phase 2

Phase 2 incorporates the new Project First specification, a requirement of Project First on most projects, and utilization of developed tools on the updated "Project First on Construction Projects" website.

Dec. 12, 2017. Work Zone Safety Guidelines for Engineering and Maintenance
This memorandum hereby replaces the Work Zone Safety Guidelines Chief Engineer memo dated July 10, 2012.

Sept. 13, 2017. Traffic Control Industry Adherence to Regulations regarding Employee Pay
This memo is intended to provide clarification regarding what CDOT deems to be acceptable applications of the regulations related to employees pay that apply to projects with Federal funding to ensure consistent understanding and practice.

Sept. 11, 2017. Guidance on archiving Construction/Engineering records in ProjectWise
This memorandum provides guidance on archiving construction/engineering and specialty group documents in ProjectWise. Many of our Project Engineers are consultants and will need access to ProjectWise to comply with this memo. These additional documents explain how consultants can access ProjectWise and how to install Cisco AnyConnect VPN to access the CDOT network from outside the CDOT intranet. For more information on ProjectWise, please see CDOT's CADD and ProjectWise website.

April 3, 2017. CDOT Municipal Separate Storm Sewer System (MS4) Construction Program Manual
This chief engineer memorandum directs the execution of CDOT's MS4 Construction Program Manual and associated implementation plan.

Nov. 10, 2016.  Revision to Guidance Recommendation: Formal Adoption of AASHTO 2011 Green Book on CDOT Projects
The purpose of this memorandum is to formally adopt the AASHTO 2011, A Policy on Geometric Design of Highways and Streets, 6th Edition (Green Book) as guidance for use on all CDOT highway projects. 

Sept. 12, 2016. ADA Title II Program Update
This memo is intended to provide employees with information regarding CDOT's commitment to the Americans with Disabilities Act Title II Program, provide a status update on ADA curb ramps on CDOT roadways, and provide direction on next steps related to furthering mobility and accessibility for all users of the transportation system. 

March 28, 2016. EPA Audit Finding - Compliance with Specification 208.09 - Failure to perform erosion control
Stormwater management process changes initiated by the findings of the March 2015 Environmental Protection Agency (EPA) Audit.  Construction Bulletin 2016-2 Water Quality Control

Feb. 23, 2016Guidance for Charging Time to Eligible Federal Aid Projects and Indirects
This memo provides guidance on charging time to federal aid projects and indirect pools. It includes five attachments listed below.

Archived Chief Engineer Memos

Colorado: The Official State Web Portal