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Annotating Alignment Curve Data with InRoads

The NHDOT CAD/D staff is not proficient in all aspects of InRoads and is only documenting specific procedures as needed.
InRoads has been set up to work within the SS4 Workspace and utilize the projects MX file locations. Using InRoads as the native product to create and transfer horizontal and vertical alignments simplifies the process from MX. InRoads has no problems with USSF and alignments can have longer names than the four character MX label. InRoads uses the same dgnlib's for most features but has different Horizontal Geometry feature definitions pointing to InRoads native functions for auto annotation and use of InRoads tools for easier profile generation.

Alignment Curve Data

Alignments are stationed through auto-annotation which also labels bearings and PC/PT locations. A separate process is used to annotate the Curve Data. Open the 12345-geometry.dgn's Default model where the alignments reside.

InRoads utilizes InRoads Explorer for its native functionality. If the Explorer is not visible, Right-Click and hold in the Default view and select Explorer Show/Hide to un-hide the Explorer panel. Next, select the Geometry tab. The Geometry tab at the bottom left of the Explorer panel is used to open or create Geometry Projects which are saved in .alg files.

The Default project can be used but it is always recreated in each new session. A new Geometry Project should be created if the alignment information is to be used during future sessions. The active project is identified in InRoads Explorer by a red box to the left of its name. If the alignment already exists in a project, it should be deleted prior to transferring it again.

Transfer Civil Geometry to InRoads

Prior to transfer check the Horizontal and Vertical feature names. Names can use a 4 character MX string label but do not need to, they can contain the road name such as NH Route 302. All named profiles will transfer so choose names that can be easily identified later. Next set the Default view active in the geometry DGN file. Select the alignment to transfer, and use the General Geometry Task > Export to Native, and Accept (Left-Click on the Screen) to send the selected alignment into the active Geometry Project.

A project should already exist, use the Open command, select the saved alg file, Open, then Cancel. In the left pane expand the Geometry Project and double click on the alignment to be annotated, setting it as the active geometry and displaying a red box around it.

Inroads Explorer Geometry tab

InRoads Explorer

In the top menu bar select Geometry > View Geometry > Curve Set Annotation... This will bring up the Curve Set Annotation box.

curve set annotation

Curve Set Annotation Panel

Click on Preferences... and select the desired preference for the type of alignment (such as Mainline Alignment).

Curve Data Preferences

Curve Data Preferences

Click Load, then click Close. Ensure the correct horizontal alignment is selected in the box and select Apply, and close. Your alignment's curve data is now displayed. The text can be moved and rotated to the desired location.

Alignment Control Symbols

A minor bug exists such that the annotated alignment does not have PC/PT circles on those points. To place these circles on the alignment select Geometry > View Geometry > View Stationing. In the View Stationing box select Preferences... then select the main o or other appropriate o preference, Load then Close. Ensure the correct horizontal alignment is selected in the box and select Apply, and close. Your alignment's PC and PT's should now have the cells placed on them.

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