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2014 CDOT Construction Manual (with updates)

The CDOT Construction Manual is an operational manual of the Colorado Department of Transportation (CDOT). It defines the criteria and procedures to be used by engineering personnel in the administration of construction contracts. The instructions and procedures in this Manual are written and intended for use by Project Engineers and Project Inspectors. You cannot buy this manual through the CDOT Bid Plans Office but can only download it here for free.
The complete 2014 CDOT Construction Manual (Revised on Nov. 9, 2018)

This file size may be too big to download, if so, please download each section below individually. You can use the PDF search function to search the entire manual if you are not sure where in the manual to find subjects. Click and open up the manual, then just type the word(s) in the "Find" box, then hit Enter. Likewise for all PDF files.

Section 100 - General Provisions (Revised on Dec. 3, 2018)

Section 100 presents the general requirements of construction contract administration and includes topics such as the contracting process, the authority of the Department, legal aspects, contract time, and payment for work. The intent and meaning of terms, pronouns, and acronyms that are typically used in Contract documents are found in Section 101. Section 101 also refers to various agencies and organizations whose specifications and construction requirements are referenced in the Contract.

Section 200 - Earthwork (Revised on October 20, 2016)

Site preparation and earthwork activities on CDOT construction projects should be carefully monitored. This type of work generally involves removing structures and obstructions, clearing and grubbing objectionable and unsuitable materials, excavating and constructing the roadbed embankment, installing temporary and permanent erosion and sedimentation control measures, and handling and disposing non-hazardous and hazardous waste materials. Throughout this type of work, the Contractor is responsible for preserving all protected properties and for complying with all applicable Federal and State laws and local ordinances in accordance with Section 107 of the Standard Specifications.

Section 300 - Bases

In terms of structural longevity and riding smoothness, overall pavement quality depends primarily on the quality and uniformity of the material layers constructed under the surface course. Subgrade, subbase, and base course materials must meet specified requirements and must be properly and uniformly prepared, placed and compacted to adequately support the loads of vehicular traffic. Deficiencies in subgrade, subbase, and base course construction will invariably degrade the riding surface and cause a need for premature rehabilitation.

Section 500 - Structures (Revised on August 12, 2014)

This section covers various types of structures such as Pilings, Caissons, Mechanically Stabilized Earth (MSE) Walls, Riprap, Gibons, Slope Mattress, Slope and Ditch Paving, Timber, Steel, Structural Plate, Bearing Devices, Pedestrian and Bikeway Railings, Waterproofing, Waterstops and Expansion Joints, and Mics Construction .

Section 600 - Miscellaneous Construction (Revised on May 13, 2016)

The section covers Structural Concrete, Reinforcing Steel, Culverts and Sewers, Manholes, Inlets, Meter Vaults, Subsurface Drains, Guardrail, Fences, Sidewalks and Bikeways, Curb and Gutter, Median Cover Material, Cattle Guards, Delineators and Reflectors, Lighting, Traffic Control Devices, Water Control Devices, Siphons, Prestressed Concrete, Water Lines, Field Facilities, Rest Areas and Buildings, Irrigation System, Drainage Pipe, Construction Surveying, Mobilization, Pavement Marking, Survey Monumentation, Construction Zone Traffic Control, and Appendices of Conference Agendas, Example Letters, Notices, Forms, Change Order Examples, and Mics Data.

Appendix D - Miscellaneous Data

Appendix D presents common tables, figures, and miscellaneous data that Project Engineers and Project Inspectors will use on a day-to-day basis. These include such items as legal dimensions and weights for trucks, procedures for measuring and documenting vertical and lateral clearances at structures, grade stamps used by accredited lumber inspection agencies, and miscellaneous mathematical formulas.

Archived: 2002 Construction Manual

Includes CDOT 2002 Construction Manual, CDOT 2002 Construction Manual with the 2004's revisions, July, 2012 and December 11, 2012 revisions.

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