Roadway Alignment

This section defines the horizontal alignment, vertical profile, and cross-section of the roadway.

Navigation: Bridge Geometry > Roadway Alignment

For detailed parameter explanations, see the Roadway Alignment Reference.

Steps

Step 1: Navigate to Roadway Alignment

Navigate to Bridge Geometry > Roadway Alignment in the tree view.

Navigation

Step 2: Set Start Station

Enter the Start Station as 23820.

Step 3: Open the Alignment Editor

Click the three-dots icon on the alignment cell and select Editor to define alignment properties.

Editor

Step 4: Define Horizontal Alignment

Click the + icon next to Horizontal to add circular segments.

Add Horizontal

Enter the following horizontal curve parameters:

Curve 1:

  • Length: 126 ft

  • Radius: 5742 ft

  • Direction: Towards Left

Curve 2:

  • Length: 478 ft

  • Radius: 624 ft

  • Direction: Towards Left

Horizontal Curves

Step 5: Define Vertical Profile

Click the + icon next to Vertical to define vertical sections.

Vertical Tab

Enter the following vertical profile points:

Section
Station (ft)
Elevation (ft)
Grade (%)

1

23768

64.6

-0.55

2

23877

64.0

-0.55

3

23951

64.0

-2.98

4

24024

61.4

-2.98

Vertical Profile

Step 6: Define Transverse Cross-Section

Click the + icon next to Transverse to define the cross-section at specific stations.

Transverse

Station 1 (23786 ft):

  • Left Edge to PGL: 28 ft

  • Width: 55 ft

  • Slope: 2%

Cross Section

Stations 2 and 3:

Station (ft)
Left Edge to PGL (ft)
Width (ft)
Slope (%)

23983

28

55

8.34

24082

28

55

8.34

Additional Stations

Step 7: Accept Changes

Click Accept to save the alignment definition.

Quick Tip: Roadway Surface Visibility

If the 3D Bridge Alignment doesn't appear in the Graphics Window, either click Zoom Extents on the right or enable Show Roadway Surface from Settings.

Roadway Surface

Verification

Completed Alignment

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