Roadway Alignment

Navigation: Bridge Geometry > Roadway Alignment

For detailed parameter explanations, see the Roadway Alignment Reference.

Step 1: Enter Start Station as 0.

Step 2: Click the three-dots icon on the Start Station cell, and then click 'Editor' to define alignment properties.

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Quick Tip: Alignment - Horizontal Data

In the horizontal tab, bridge definitions can be made as straight, circular, and transitional.

Step 3: Click + icon next to the Horizontal and add a circular segment.

Step 4: Enter Length as 530 ft, Radius as 700 ft, Direction as Towards Right and after click accept button.

Quick Tip: Alignment - Vertical Data

You can edit the Vertical data such as grades and elevations of alignment in the Vertical tab.

Step 5: In this example, vertical data of alignment is set to 0.

Quick Tip: Alignment - Transverse Data

Left Edge to PGL is the length from the left edge to the centerline of the alignment.

You can edit the Transverse data such as width and slope of alignment in the Transverse tab.

Step 6: Click + icon next to the Transverse to define the alignment cross-section at a specific station.

Step 7: Enter the cross-section Station as 0 ft.

Step 8: Enter the Left Edge to PGL distance as 20 ft.

Step 9: Click + icon next to the At Sta+0 and add a section component.

Step 10: Enter the Width as 40 ft and Slope as %-5.

Step 11: Repeat Steps 9-10-11 for Station 530 ft. Then click + icon next to the At Sta 5+30 and single line of a polyline that defines your entire cross slope.

Step 12: Enter the Width as 40 ft and Slope as %-5.

Step 13: Click Accept.

Quick Tip: Learn how to show Roadway Surface

If 3D Bridge Alignment doesn’t show up in the Graphics Window, either click Zoom Extends on the right or Show Roadway Surface from the Settings.

Step 14: When the steps are completed, the shared screenshot displayed in the adjacent cell should be visible in the 3D view of OpenBrIM.

Quick Tip: Learn how to show Model

Click on the arrow button above the Analysis button located in the upper-left corner of the OpenBrIM screen.

Click on the Model button on the screen that opens up.

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