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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 2/10/2016
The history of CDOT’s Survey Manual is easily traced back to the 1960s. Prior to this date information is scarce, difficult to verify, and those individuals who worked as surveyors have long since retired...
Chapter 2 - General Procedures
The purpose of this Chapter is to define General policies and procedures...
Chapter 3 - 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...
Chapter 9 - InRoads Survey / CDOT Best Practices
The purpose of this chapter is to define the InRoads Survey best practices that shall be followed by CDOT surveyors or contract consultant surveyors...
Survey Forms and Documents
The section provides access to forms and documents such as the presurvey conference - aerial survey form, construction survey form, preliminary survey form, preliminary survey scope, etc...
Supplemental Information
The section is provided to offer supplemental information on Geodetic leveling, open records request, special use permits, disclaimers, etc...
Contact Us

Please send survey manual comments to:
Darren Shanks
[email protected]

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