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Transfer OpenRoads Alignment to MX - US Survey Feet

This process assumes the working units of the project drawings are set to US Survey Foot (USSF) units and OpenRoads horizontal and vertical alignment(s) have been created. This documentation describes the process of transferring them to MX to create a profile drawing or to scan the topo model to create the XSdetail information.

Export the OpenRoads Proposed Alignment to MX - USSF

For older projects using Feet as the drawing units, see Transferring an OpenRoads Alignment - International Feet. Create a Sect ExistElev feature prior to transfer for the Existing ground profile or use an input file to create one.

OpenRoads drawings are seeded with 3 DGN models:

  1. Default
  2. Default-3D
  3. MX

It is imperative that the proper DGN model be active.

When using USSF files, the transfer of OpenRoads alignments to MX needs to be done by creating a LandXML file.

Open the Default model and use Element Information to check that the Feature Definition is set to Alignment. Also change the Feature Name to MCxx, the xx being any 2 character alphanumerics that you desire such as MC1M.  Check out MX Design String Names for standard MX string naming conventions.  If not renamed, then OpenRoads will assign the name of MC00 for the first transfer.  Subsequent transfers will increment the Feature Name by an interval of 10, the second transfer will be assigned the name MC10.

Create an MX Design model to receive the alignment.  To do this, from the MX menu select Modify > Edit Models > Create Model... Set the Model Defaults to Road.pss/Road.fns.  Suggested names include GEOMETRY LANDXML, PALIGN and FALIGN.

LandXML Import File Box


For more information see the documentation on Generating the Report.... Use the Analysis and Reporting Tasks > Horizontal Geometry Report   Hit on the Alignment. Lock Start and End, Interval = 50, and Include the Active Profile.  OpenRoads will open the Bentley Civil Report Browser and display the default horizontal report.  Select the AlignmentsToLandXML.xsl report on the left side of the panel. When the report is displayed, select Save As... from the File menu.  The Save as type should already be set to Text File (*.txt), so just provide a File name (ie MC9M-landxml.xml)

This file needs to be imported to MX.  MX > File > Import > LandXML....   select the .xml file you just saved.  Click on Alignments Mapping.  Set the model name and then set the MX Feature mapping to Alignment(MC) using the Dropdown menu.  Hit OK.   Now an MX - M and G string of the OpenRoads alignment exists in the MX Design model.

Landxml import Alignment Mapping

Create the MX Existing Ground Profile String

An Existing ground profile string needs to be created, copy the Edit and Section commands from the documentation on Generating the Old Ground Profile String and paste into a new PFE text file.  Edit Model and String names to match the alignment which was transferred.

Save the edited file to the project'sMXDATA folder, then input the file, MX > File > Input > Filename.

Now that the Existing Ground string is created, the profile can be drawn using the MX Add-in > NHProfile-v8i.

OCAM input file in PFE editor

New Hampshire Department of Transportation
PO Box 483  |  7 Hazen Drive  |  
Concord, NH  |  03302-0483
Tel: 603.271.3734  |  Fax: 603.271.3914