Module 7 - Quantifying Guiderail


These instructions will guide users through placing guiderail features and provide layout steps. Pay Items as well as Asset information will be tagged to each feature through Item Types.  During placement each piece of linear guiderail, end anchors, bridge attachments and impact attenuators will come with the preset (most common) bid item number. These bid items can always be modified after placement for those out of the ordinary circumstances.

For more information on layout parameters please refer to The CONNDOT HIGHWAY DESIGN MANUAL - Chapter 13 Roadside Safety. 


  • Learn how to place linear and point features with Item Types Attached.
  • Learn how to remove civil rules from graphical elements.
  • Learn how to edit pay Item and asset information on graphical elements. 
  • Learn how to generate reports.

1. Create a new file and save it to your Base Model folder, HW_CB_1234_1234_Quantities.dgn.

2. All the Items placed in a file can be viewed in the Explorer dialog box under Items. This should be reviewed to make sure all the Items are placed correctly. 

If you do not see the Explorer dialog box, click on the Home tab and select the Explorer button.

Explorer Icon

If you do not see the Items section, click on the File tab. Select Settings > Explorer Settings. Toggle Yesto all the fields in the Items section and click OK.

Explorer Settings

3. In a real-life project scenario the edge of road will already be placed in the design before the guiderail layout begins. For the purposes of this exercise, we will place a line to represent the edge of road. Select the OpenRoads Workflow, on the Geometry Tab, in the Horizontal section select the Lines icon. The Lines dialog box will appear, for Feature Definition select Linear\Roadway Geometry\Edge of Pavement Line. Follow the prompts and place a 100-foot line.

4. Select the Home tab and set the Element Template to None and Level to Default.

5. On the Geometry tab, use the Single Offset Entire Element. Set the Offset to -2Feature Definition to No Feature Definition and leave the Name blank. Follow the prompts to copy the edge of pavement.

6. With the cursor hover over the copied line and select the Remove Rule tool. Follow the prompts to remove the rule.

7. Switch the workflow to CTDOT, on the Home tab use the Place Smart Line tool to place the flared Guiderail sections and trim the parallel line to the flared sections.

8. In the Search ribbon type Create Complex Chain and select the tool. Follow the prompts and select each section of Guiderail to create a complex chain. Break the line where needed to add sections for different post spaced pay items.

9. Switch the Workflow to OpenRoads Modeling, in the General Tools section select the Standards pull down and select the needed Feature Definition: Linear > Roadside Safety > Pay Items - Guiderail…

Follow the Prompts to set the Feature Definition.  Move on to the next segment if one exists.

10. Select the Lines and Points just placed and fill in the RB-Run_ID.  Use the SEARCH field to look up any needed changes to the Pay Item, the Pay Item Number or Description can be entered to search.


11. Add the Point Features End treatments. On the Geometry tab’s Horizontal section select Point. 

Feature Definition: select as needed there are different folders to help searching through the types.

Points > Roadside Safety > Attachments…

Points > Roadside Safety > Attenuation Systems…

Points > Roadside Safety > End Anchorage…

Follow the prompts to place the Cells.

 Last add the Point Features End treatments. On the Geometry tab’s Horizontal section select Point.


12. To view a report of the placed Items select the Analyze tab and select the Reports icon. 

13. On the Reports dialog select Roadway / Roadway Safety Pay Items and click in the Preview Results icon. A list of all the graphical elements using the PAY ITEMS Item Types will appear. 

14. If you would like to report on graphical elements that are in a referenced file, right click on the Pay Items Report Definition and click Save to active file. In the properties section select Yes to Include Reference Attachment.

15. To export the report to Excel click on the Export results icon and browse to save the report.