OpenBridge Modeler

Workflow For Auxiliary Items

Workflow: Adding Auxiliary Lanes

Auxiliary lanes (those with user-specified cross slopes and station range) can be added using the Create Superelevation Lane tool, but must be within a single section. When a single section is selected, the prompts change to reflect adding an individual lane. To move the limits of a section to accommodate an auxiliary lane, graphically select the section, and dynamically move to the desired station. To get an exact station, use the section manipulators and key in the value. If there is an adjacent section, it also needs to be moved, to avoid overlapping or a gap between sections.

The result of this workflow is graphic auxiliary lane. The lane needs to be associated to the corridor, similar to the through lanes. If the lane is ruled, the section containing the lane needs to be reprocessed (calculate superelevation).

Workflow for Auxiliary Lane

  1. Review the section to ensure the auxiliary lane fits within a single section. Adjust section limits if necessary.

  2. Select the Create Superelevation Lanes tool.

  3. Follow the heads-up prompts:


User Action

Locate First Superelevation Section

Select the first section.

Locate Next Superelevation Section - or Reset to Complete

Reset to move to the next prompt. Keep in mind for auxiliary lane only one section may be selected.

Enter Lane Name

Name each lane, suggestions include RT or LT which can be appended -1, 2, etc. for projects with multiple lanes. Note these names should be unique if your project has multiple corridors.


Select Auxiliary. After the selection, the dialog/heads-up prompts change to reflect the selection.

Application Type (Aux. lane only)

Define cross-slope:

None - no cross slopes are assigned.

Constant - Fixed slope of specified value. If lane is transition, use this option, then modify one end in the editor or graphically after creation.

Follow Adjacent - Projects cross slopes from adjacent lane to this lane.

Select Side of Centerline

Right or left.

Inside Edge Offset

Enter the offset (in master units) from the baseline reference. If the lane edge is the baseline reference, enter 0.


Enter the width of the lane (in master units). If the lane is of varying widths, you can use the widest width, or narrower than the width. In both cases, the template can control the width by parametric constraints or graphical features.

Start Station

Graphically define (based on the dashed line perpendicular to the reference element) the beginning of the lane. Station can be keyed in and locked.

End Station

Graphically define (based on the dashed line perpendicular to the reference element) the end of the lane. Station can be keyed in and locked.

Normal Cross Slope

Enter the default cross slope to be used for calculations (in percent format). It is not necessary to add the percent sign.