Survey

The purpose of the CDOT Survey Manual is to define the minimum specifications that shall be followed while performing surveys for CDOT in order to secure an optimum degree of statewide uniformity, to establish and maintain survey standards, and to improve the overall efficiency of CDOT’s survey functions. This manual is not intended as a textbook on surveying, rather it provides a reference source for statewide surveying policies, procedures, and information. The Survey Manual is an online document accessible via the internet. Each chapter and their related documents are posted and maintained on this site independent of each. Updates may be posted at any time.
Chapter 1 - General Fall 2021

The history of CDOT’s Survey Manual is easily traced back to the 1960s. This Chapter has been updated to include hyperlinks from the Table of Contents and supporting documents for use by the Surveyors working on Colorado transportation corridors under the oversight of CDOT.

Chapter 4 - Aerial Surveys Fall 2021

CDOT contracts with consultants for surveys using manned aircraft and Unmanned Aircraft Systems (UAS) for photogrammetry and mapping. The Scope of Work for the Project and the Region PLS-II, determines who will perform part or all of the survey for a project. CDOT relies upon the expertise and experience of the aerial mapping consultants to provide guidance and products that will meet or exceed the accuracy requirements of the project

Chapter 3 - 2010 GPS/GNSS Surveys

The purpose of this chapter is to define the specifications that shall be followed while performing GPS/GNSS surveys for CDOT by CDOT surveyors or contract consultant surveyors...

Chapter 4 - Aerial Surveys 12/30/2015

The purpose of this chapter is to define the specifications that shall be followed while performing aerial surveys and aerial photogrammetry for CDOT. CDOT contracts out all aerial surveys as the aerial photography and mapping equipment is not available in the department.

Chapter 5 - Preliminary Surveys

The purpose of this chapter is to define the specifications that shall be followed while performing preliminary surveys for CDOT by CDOT surveyors or contract consultant surveyors...

Chapter 6 - Construction Surveys

Construction surveying must be given special consideration to assure that cost efficient and expedient methods are used, and appropriate accuracy and tolerances are maintained...

Chapter 7 - Safety

This chapter provides a compact source of the basic specifications and responsibilities for safety and health that will aid in preventing accidents and personal injuries while performing field surveying by CDOT or contract consultant surveyors...

Chapter 8 - Resources

The purpose of this chapter is to provide the surveyor with an easy to use resource of information that will enable the user of this manual to reduce her/his library of reference material needed in the field...

Survey Forms and Documents

The section provides access to forms and documents such as Permission to Enter Property forms, preliminary survey scope and presurvey construction forms, etc...

Supplemental Information

The section is provided to offer supplemental information on Geodetic leveling, open records request, special use permits, disclaimers, etc...