Section 3: Investigative SurveysAnchor: #i1027439
An investigative survey is a recording of spatial information at the site of an incident or study involving health, welfare, or environment. Some TxDOT districts still provide an investigative survey at the scene of auto accidents, but primarily the Department of Public Safety has their own equipment and procedures.
Any unforeseen impact of highway construction may require a survey of the area. For example, the effects of water run-off from highway design may require mapping if an archeological sites is threatened.
The TSPS Manual of Practice contains a thorough outlining of this type of survey in the Category 9 specifications.