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123456789_123456789_1123456789Cable-stayed Bridge Software 

Model Description
ICDAS YouTube Channel   ICDAS CSB 2024.00R

Road Bridge Model Examples

Cable-stayed Bridge

Model Examples


Model description




BIM model


Analysis model


Landscape model


ICDAS Basis of Design


Workflow of Software


Additional features

Rendering, Animation &
Vitural Reality


Case Study and 




Welcome to ICDAS Add-Ins for automatic creation of Cable-stayed Bridges (CSB).


This section and links on the left menu give a brief introduction for working with automatic model creation of Cable-stayed Bridges. ICDAS creates information model

in Revit and analysis model in Lusas by reading parametric input in Excel file. The Excel file is also an output where data from Revit and Lusas models are written back

for further calculations. To work with ICDAS options for CSB 2024.00R, the following software are needed:


 ICDAS CSB 2024.00R

 Revit 2024

 Dynamo (free in Revit)

 AutoCAD Civil3D 2024

›  Lusas Bridge V20 (also available on previous version)

 Excel or Text editor (NotePad++ freeware code editor)

To use Virtual Reality in Revit LIVEyou need VIVE VR System where computer graphics NVIDIA GeForce GTX 1060 (or above) and all other requirements (HTC Headset) are listed in the link.


ICDAS Cable-stayed Bridge provides high level accuracy project design using Revit intelligent model-based technology for the following benefits:


3D model is created as the basis of all associated 2D sectional drawings, which are

  updated dynamically for changes of 3D model.

3D Pylon with 8-points cross section

Any 2D profile of deck for 3D creation of massive deck using Revit Civil Structures

The power of ICDAS Revit Bridge is that, the users can change ICDAS family files

   for a new bridge in no time, and all family files are stored in one project file.


On the same time, ICDAS automates also LusasCSB.cmd file to be imported in Lusas for the FEM model (based on parametric input from Excel file). The following automations are currently coded for LusasCSB.cmd file


› 3D streamlined steel box girder of deck in shell elements

› Inclining pylons in beam element (tapered cross section assigns manually)

› Automatic cable arrangement for a given section length and spans lengths.


ICDAS CSB provides either streamlined steel box girder (default) or concrete box girder.


There are further three options for creation of Revit and Lusas bridge model in ICDAS. 
In short, they can be called ICDAS, Civil Structures and Dynamo, respectively.
However, the last two options still need family files from ICDAS Option 1 (default) and the three options can be combined. All options will start from Revit summarized below.

Lusas example 






Table: The three options for automation of cable-stayed bridges.


Alignment, steel and/or concrete deck

ICDAS Excel input

Option 1


Example 3


Example 2


Required software

›   ICDAS CSB 2024.00R

›   Revit 2024

›   Lusas Bridge V20 (also previous version)


Option 1 is default for rectilinear alignment of cable-stayed bridge. Both of Revit and Lusas models are automated concurrently.


Revit model


'ICDAS_Generic_3D_Pier.rfa' (Pylon)


Pylon incl. stayed cables, streamlined deck and ribs, bearings, piers, foundations, and piles are loaded into project files as for ICDAS bridges. ICDAS provides library for family files manual on how to use it.


The bridge is designed at (0,0,0) for both of Lusas and Revit models. A global point assign to Revit Project Base Point from which the entire bridge is changed to global coordinate accordingly.


For concrete approach bridge refer ICDAS COB. 


Lusas model


Rectilinear alignment and streamlined steel box deck is default. For concrete box with walls the input still can be used with some modification.



You need to create the underpass corridor manually.


There are unlimited number of top and bottom lines creating the deck.

Distances and slopes for top and bottom lines are in BRIDGE sheets.


Pylon and cables are inputted in BRIDGE sheets.

Spans and section length are inputted in STL sheets. 


Option 2

Civil Structure

in Revit

Example 1 

equired software


as in Option1, and


›   Civil Structure 2019 in Revit (free addin from Autodesk)

›   AutoCAD Civil 3D


Option 2 provide global coordinate for the bridge overpass and the road underpass, where Revit is in integration with AutoCAD Civil 3D (curved alignment). Civil Structures is for concrete massive slab deck and concrete box deck by default.


Revit model

'ICDAS_Profile_2D_Deck.rfa' (streamlined steel deck to customize in Civil Structures)


Pylon incl. stayed cables, bearings, piers, foundations, and piles are loaded into project files as outlined in Option 1.


Note that Civil Structures use mass family for concrete deck which cannot host rebar. 3D reinforcement (Free Form Rebar) is therefore not available.



Lusas model

'LusasCSB.cmd'. As in Option 1.




You need to customize ICDAS family for streamlined steel deck. Instructions are including in ICDAS Revit Bridge Manual.


Option 2 includes also underpass corridor where the users can check Revit model with terrain model in Civil 3D.

Same as Option 1 for the deck 2D profile, 3D pylon & cables.

Spans length define in ‘Bridge definition’ in Civil Structures  

Input for spans and section length in Excel are for Lusas model only.


Option 3



in Revit

Dynamo has not been yet tested in ICDAS for streamlined steel deck of cable-stayed bridges.



Refer ICDAS COB for concrete approach bridges


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123456789_123456789_1123456789123456789_123456789_123456789_123456789_123456789_123456789 Updated 11-08-2023

123456789_123456789_1123456789ICDAS  •  Hans Erik Nielsens Vej 3  •  DK-3650 Ølstykke  •   E-mail: th@icdas.dk   •  Tel.: +45 60 53 83 79  •  CVR no.: 34436169