Adding a Superelevation to a bridge deck can be done manually, and even varying the slope is possible. The following steps will address both of these options for creating a Superelevation across the bridge.

Edit Deck Slopes for Superelevation

Constant Superelevation

• Open the file that contains the 3D bridge model file
• Open Explorer
• Drill down to the Deck
  • Select the Deck to be edited
  • Right-click to Open the Properties
• In the Properties dialog, in the Deck panel, select the Variable Constraint category, left-click on the ellipse to Edit it

• When the SingleDeckTemplateWindow dialog appears, make sure the Variation Tab is selected
• Select LT_Slope_Lane1 Variable
  • Check on Active
  • Left-click the add variable (green plus sign)
  • In the Start Value enter -0.04
    • Notice the graphic above in the dialog showing the slope on the left as 0.04 and on the right as 0.02
  • In the End Value enter -0.04
    • Notice the graphic above in the dialog again

• Select RT_Slope_Lane1 Variable and add a slope variable with the value of -0.04
• Left-click OK to apply the change in the slopes
• It is possible to view the change in the Isometric View

Variable Superelevation

This exercise will show how a Superelevation can be varied across a bridge deck. This is not a designed SE, it is only for demonstration.

• Open the file that contains the 3D bridge model file
• Open Explorer
• Drill down to the deck
  • Select the deck to be edited
  • Right-click to Open the Properties
• In the Properties dialog, in the Deck panel, select the Variable Constraint category, left-click to Edit it on the ellipse
• When the SingleDeckTemplateWindow dialog appears, make sure the Variation Tab is selected
• Select LT-Slope_lane1 Variable
  • Check on Active
  • Left-click the add variable (green plus sign)
  • In the Start Value enter -0.04
    • Notice the graphic above in the dialog showing the slope on the left as 0.04 and on the right as 0.02
  • In the End Value enter -0.02
    • Notice the graphic above in the dialog again. This is not a designed SE, it is only for demonstration.
• Select RT_Slope_Lane1 Variable and add a slope variable with the value of -0.04 and -0.02 as done in the previous step
• Left-click OK to apply the change in the slopes
• View the change in the Isometric View