Autodesk Civil 3D 2023.2 Update

Oct 24, 2022 – Autodesk released Autodesk Civil 3D 2023.2 Update

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The Autodesk Civil 3D 2023.2 Update is available via the Autodesk Desktop Connector app or via download from the Autodesk subscription site.

The update requires access to the original install resources.

The Civil 3D 2023 Collaboration functionally requires a recent version of the Autodesk Desktop Connector (

Autodesk Civil 3D 2023.1 Update

The Civil 3D 2023.2 Update is a major Civil 3D performance improvement, functionalities, capabilities , and fixes update to Civil 3D 2023. There may be more changes and improvements in this single update than in Civil 3D 2023 and Civil 3D 2023.1 combined.

The Civil 3D 2023.2 update includes a significant Subassembly Composer update.

There is an important update to Project Explorer for Civil 3D 2023.2 released simultaneously. We can probably expect a Grading Optimization 2023.2 for Civil 3D (GO) update real soon now.

Performance Improvements

The Civil 3D 2023.2 update includes important and noticeable performance tweaks.

The Adaptive Labels improvements (discussed below) are pretty obvious if we face the Label redraw performance lag in our daily work.

Any Civil 3D write or delete operation that addresses multiple items like turning off all Labels, deleting an entire Pipe Network, or updating an Alignment with multiple related Profile View and Section Views is noticeably quicker.
Deleting the Profile Views, Section Views, and Pipe Networks is faster.

Corridor rebuilds (without Target horizontal or vertical changes) are faster. Depending on the corridor design control geometries, rebuilds may be much faster.

Generation of many Civil 3D Profile Views and/or Section Views is improved significantly.

Adaptive Labels

This new and optional performance feature called Adaptive Labels supports Civil 3D Group Labels in Profile Views and Section Views. The new code is designed to reduce the redraw issues of lots of Civil 3D Profile View and Section Views Groups labels in larger Plan Production Plan and Profile and Pages of Sections Sheet drawings.

In the Civil 3D Status bar, the Adaptive Label Group icon manages the new  AECCLABELOPTIMZE system variable. When this is turned on Group Labels that are outside the modelspace viewport range are not drawn.

The Adaptive Label Group interface tool allows us to control and manage the redraw behavior of Group Labels in Profile Views and Section Views.

Label Visibility

A new Label Visibility icon is available on the Status bar so that we can show or hide labels for the whole drawing. This option has the same effect as turning on/off labels in the Edit Label Style Details dialog box. Labels of a specific feature will be controlled by its Feature settings.

The AECCVIEWPORTOPT system variable controls whether labels in paper space will be drawn if they are not within the extent of the viewport.

Corridor Transitions

The Civil 3D 2023.2 Update takes a first significant crack at solving a long outstanding Corridor Transitions Civil 3D wish list item.
We want to change and manage the varying and specific width, elevation, slope, and grade properties of a Subassembly or PKT over a range of stations.
For example: We want to modify the Height of a Curb in a Curb Subassembly or PKT over this range of stations to create a driveway.

The update introduces the Corridor :

  • Transition - operates on a named Subassembly or PKT property within a defined station range
  • Transition Set (confined to the same named Subassembly) collects and manages multiple Transitions.

Station ranges between Transitions (or between Sets) can be the same or Transition ranges may overlap. Civil 3D employs a last Transition wins rule.

Transition Sets may be exported and imported in an external CSV format between production drawings. Civil 3D checks the validity of the imported Transition data.

Pressure Pipe Improvements

In Civil 3D 2023.2 it is now possible to connect Force Main Pressure Pipes to a Pipe Network Structures and Civil 3D will recognize, Label, and keep the connection.

In other words, the Update adds the ability to:

  • Connect Pressure Network Pipes to Pipes (gravity) Network Structures
  • Show connected Pressure Pipes in the Pipes (gravity) network Structure Properties dialog box
    Catchments have been moved from the Connections tab to the new Catchments tab in the Structure Properties dialog box
  • Label Pressure Pipes that are connected to Pipes (gravity) structures by using the Text for Each label style component and selecting the Structure All Pressure Pipes type

This is another major Pressure Pipe tools and interface ease of use update. The Civil 3D 2023.2 Update is a fit and finish Pressure Pipes update.

  • Fittings and Appurtenances are now locked to PI points when grip editing the pipe network. The Fittings and Appurtenances are kept in place relative to the end of the pipe that is not moved
  • Added a new slide grip at Fitting and Appurtenance insertion points. The previous slide grips on either side of the Parts have been removed. The new slide grip allows the use of Osnaps to snap the insertion point to a desired location
  • Added Display as Linework options for displaying Fittings and Appurtenances in Profile View. Use this option to show a simple view of the Parts in the Profile View

There are certainly a host of Pressure Pipe performance, interface improvements, updates to behaviors, and fixes (for fixes see the Update fixes section below).

  • The Pipe Run Profile override locations are now locked to the geometry so that if the upstream (0+0) stationing changes, the overrides stay with the applicable geometry and the stationing updates for the overrides
  • Added the Relink Pipe Run command to relink Pressure Network Parts to their underlying Pipe Run Alignment if they become detached from their underlying Alignments when we edit them
  • Added a ribbon option for accessing the Regen Pressure Solid command for regenerating missing 3D solids for fittings and appurtenances. Use this command if pipe parts appear to be missing from Plan or Profile View

Civil 3D API Improvements

The Civil 3D 2023.2 Update includes improvements to the API for Corridors, Pipe Networks, Pressure Pipe Networks, and Catchments.

Subassembly Composer

The Subassembly Composer (SAC) now supports versioning and viable PKT Codes standardization tools for the Points, Link, and Shapes. The SAC supports exports and imports of codes from external from an external CSV ASCII text format file. Named references to codes can be found and replaced.

Project Explorer

The Project Explorer 2023.2 Update includes support for Catchments (see the Civil 3D API improvements) and include support for Property Sets.

There is improved the performance of displaying large collections of Superelevation Critical Stations in the Alignments tab of the Project Explorer window.

See the Autodesk Civil 3D 2023.2 Update Release Notes

Civil 3D 2023.2 Update Fixes


  • Fixed an API issue for SuperelevationCurveCollection.ImportSuperelevationDataFromFile() in which superelevation data would not be imported from an external file in some cases.
  • Fixed an error in the .NET API SubassemblyCollection::importParamToSubassembly. This API is used import parameters from an ATC file. Prevously this API required the DataType string to be capitalized. Now it is no longer case sensitive.
  • Fixed an issue in which Part.PartDescription returned the part size name instead of the part description in the catalog.

Autodesk Collaboration for Civil 3D

  • The view frame template path in a cloud drawing is now updated automatically when the sheet drawing is opened from different machines, so users can create sheets based on the view frame template selected by other users.
  • Fixed an issue in which the AddInProcess.exe - System Error error panel would be displayed when opening a drawing.
  • Fixed an issue in which the user entitlement was not checked for PromoteReference and PromoteAllReferences functions.
  • Fixed an issue in which it was not possible to set the data shortcut working folder to an Autodesk Docs project folder with View + Download permissions.
  • Fixed an issue in which custom properties were missing when dragging and dropping sheet set files to the cloud or when multiple users were working on the same sheet set file to add custom properties.

Autodesk Connector for ArcGIS

  • Fixed an issue that would cause geometry to import with an offset after saving back objects to ArcGIS in the NH83 and NH83F coordinate systems.
  • Fixed an unexpected error that would occur when importing imagery data from ArcGIS Online in which the selected area was out of the coordinate system extents.

Autodesk Grading Optimization

  • Fixed an unhandled exception that would occur when running the Grading Optimization tool for some drawings.

Autodesk Vault

  • Fixed a stability issue that would occur when selecting the "Automatically log in next session" check box for the Vault login.
  • Fixed an issue in which Vault references could not be created when the source drawing's folder was not opened in the Prospector tree.


  • Fixed an issue in which the velocity was not shown for the catchment shallow flow in flow segments.
  • Fixed an issue in which the runoff coefficient in the catchment creation dialog box did not work.

Coordinate Systems

  • Fixed an issue that would occur when opening a DWG file with a custom coordinate system in which a blank library would be generated.
  • Fixed an issue in which it was not possible to create a cropped surface in a drawing with a UCS assigned to it.
  • Fixed an issue in which latitude and longitude and grid coordinates were different when using a Map 3D coordinate system and Civil 3D coordinate system.


  • Fixed an issue in which geometry locking was not working for corridors that used feature lines as baselines.
  • Fixed a stability issue that would occur when rebuilding all corridors in a drawing.
  • Fixed an issue in which the direction of the marker label arrow was incorrect in the Corridor Section Editor.
  • Fixed an issue in which the Create Boundary From Corridor command did not create a boundary for each corridor region or the offset baseline part of the corridor.
  • Fixed an issue in which a corridor would become out of date after saving the drawing.
  • Fixed an issue in which geometry locking was not working for corridors that used feature lines as baselines.
  • Fixed an issue in which a corridor surface would not be automatically rebuilt after editing its boundary.

Cross Sections

  • Fixed an issue in which updating the feature line label style in the Properties Palette for a projected or crossing feature line would not update the style in the Cross Section View properties.

Data Shortcuts

  • Fixed an issue in which data shortcut projects were unable to load from SharePoint when it was mapped to a network drive.
  • Fixed an issue in which a data shortcut reference could not be created for a corridor with an offset alignment.


  • Fixed an issue in which grading creation would not succeed when using certain parameters.
  • Fixed an issue in which gradings would have incorrect results when created from feature lines with curves.


  • Reduced the probability of encountering an issue in which the Adjust Mapcheck command does not generate the adjustment data files in Notepad successfully when using Windows 11.


  • Fixed a stability issue that would occur when deleting parcel segments and then using the UNDO and PURGE commands.


  • Improved performance when opening a drawing when the Civil 3D workspace was set as the current workspace.

Pipe Networks

  • Fixed an issue in which the catchment total area shown in the structure properties was not correct when the time of concentration was not calculated.
  • Added the ability to show the front view of a structure boundary when the structure projection was unsuccessful in certain angles.
  • Fixed an issue in which a pipe that was projected onto a profile view looped back to the closest perpendicular location and was displayed incorrectly in the profile view.
  • Fixed an issue in which curves were shown at the start and end of a pipe.
  • Fixed an issue in which pipe label anchor points were incorrect in profile view.
  • Fixed an issue in which pipes were resized when the pipe slope was changed.
  • Added a function in which the part size name will be regenerated according to the part size in the part list.
  • Fixed an issue in which the wrong structures were shown in the gravity network analysis report.
  • Fixed an issue in which the structure width parameter was not shown in the structure label properties drop-down list.
  • Fixed an issue in which the pipe's label attachment location was influenced by pipe direction.

Plan Production

  • Fixed a layout issue that would appear on the Sheets page of the Create View Frames wizard.

Pressure Networks

  • Fixed an issue in which the Enable Part Masking option did not work for fitting or appurtenance styles that used the Display as User-Defined Block setting.
  • Improved the performance of moving a pressure pipe run PI.
  • Improved the performance of continuing to lay out a pipe run.
  • Added a message to show information about the deleted pressure parts when editing a pipe run.
  • Added a function so that when two or more continuous pipes share a line/arc element of an alignment, you can delete one of them and another pipe will extend to cover the deleted pipe's length.
  • Fixed an issue in which the pressure part at the end of a pipe run was rotated after relinking the pipe run.
  • Fixed an issue in which the pressure pipe 3D length was not correct when the pipe run contained multiple vertical segments.
  • Fixed an issue in which hatches didn't work in curved pressure pipes.
  • Fixed an issue in which the pressure network fitting style was not from the Parts List when parts were swapped automatically due to edits.
  • Fixed an issue in which a 2-port hydrant did not have slide grips.
  • Provided a method to fix an issue in which pressure parts were missing in the Prospector tree and were not appearing in data referenced drawings. Now selecting Refresh in the pressure network context menu will resolve the issue in source drawings. This issue can be resolved in data referenced drawings after resolving the source drawing and synchronizing the data references.


  • Fixed an issue in which the applied cant lines would not be displayed on the cant band of a profile view in some specific conditions.

Reference Templates

  • Fixed a stability issue that would occur when opening some specific drawings that use reference templates in different versions. Note that this issue is fixed when working with Civil 3D 2022.2 and a later version of the software.
  • Fixed an issue in which reference styles were lost when adding a grid surface from a data shortcut.


  • Fixed an issue in which changes to parameters in the subassembly properties may be lost after editing the parameters.
  • Fixed an issue in which it was not possible to add a subassembly named "Left" or "Right" to an assembly.

Subassembly Composer

  • Fixed an issue in which subassemblies would have different output parameters shown in the property depending on whether they have a double type input parameter.

Superelevation Views

  • Fixed an issue in which a superelevation view was moved after deleting a critical station from it.


  • Fixed an issue in which decimal values could not be used in surface extraction when creating 3D solids in non-English versions of Civil 3D.
  • Fixed an issue in which grid surfaces analyses did not plot in true color.