CAD and Utility Mapping

Get a drawing with updated utility info (level A, B).

What's the problem?

Do you need to update your CAD map to reflect newly identified utilities? Document subsurface features and receive superior reporting before or after construction.

Receive mapping from a basic field sketch to a detailed AutoCAD report. Our field employees pull insights from previous maps, blueprints, or drawings to tailor their utility locating approach. They will confirm the location of known utilities as well as search for unmapped features. Pinpoint buried:

  • Electrical lines
  • Communication lines
  • Water lines
  • Gas lines
  • Sewer and storm drain lines

Field employees complete thorough grid scans with ground penetrating radar equipment. Receive a basic mark out of all utilities and surface features color-coded on an overlay of a 2D representation of your facility. At no additional cost, have this easy-to-read visualization produced.

Bring existing documents of your underground infrastructure up to date. Leveraging the latest technology and locating techniques, our field employees map and mark utilities throughout the project site. With ground penetrating radar, field employees can digitize and update the following documents:  

  • Paper maps
  • Blueprints
  • Drawings

The digitized documents are examined and then remodeled into an electronic CAD format. Field employees add survey data to the map and overlay it on a feature. For instance, hydrants are styled using symbols, and parcels are styled to include labels based on their attribute data. All features can be assigned scale ranges so the labels appear only at certain zoom levels.

Identify problematic drawings by receiving accurate, field-verified data to make informed project site decisions. Our engineers produce detailed CAD files in DWG/DGN formats. Remodeling a facility can be streamlined in a digital space, and presentation is enhanced with layers and color coding.

AutoCAD Map 3D software provides access to GIS and mapping data to support planning, design, and data management. Prevent striking undocumented lines or foreign objects.

autoCAD or CAD mapping utility mapping service icon

Process highly accurate digital surface models and get deeper Insights from your inspections.


Incorporating high-accuracy GPS mapping to create a professional visualization of underground utilities for property owners and municipalities alike.

trinity subsurface CAD map deliverable
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Get your questions answered


What's the difference between GIS and CAD mapping?

CAD models things in the real world. GIS models the world itself. Therefore, GIS uses geographic coordinates systems and world map projections while CAD coordinates are relative to the object being modeled.

To produce a CAD map, precise horizontal and vertical utility locations are collected using vacuum excavation. Test hole locations and data are documented using GIS software.

CAD mapping ensures you have accurate records to keep your company on course and help take the guesswork out of your utility infrastructure layout.

What makes a utility map and a field sketch different?

Our technicians overlay critical utility lines on GPS images to provide an alternative visualization to a CAD map. This allows project site workers to better visualize and determine the subsurface infrastructure. At no additional cost, Trinity Subsurface, LLC will provide field sketches with any utility mapping job.

Although our field sketches are highly accurate, they are not always to scale and should be used for reference only. Therefore, CAD mapping when the highest accuracy is needed.

Can you update existing maps?

Trinity Subsurface, LLC will bring your existing blueprints, maps, and drawings up to date. Our technicians can digitize paper maps, blueprints, and drawings into an electronic CAD format that can easily be manipulated, edited, and updated.