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123456789_123456789_1123456789Concrete Bridge Software 

BIM Model (Geometry)
ICDAS YouTube Channel   ICDAS COB 2024.00R

Road Bridge Model Examples



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Concrete 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

Trial Version



How to run ICDAS Addin in Revit?


To run an ICDAS Addin in Revit for deck and pier, you need to open the correct family file. ICDAS provides three family templates in association with a selected REX parameter in input.


ICDAS_Generic_3D_Deck.rfa (REX=1)

ICDAS_Generic_3D_Pier.rfa (REX=2)

ICDAS_Profiles_2D_Deck.rfa (REX=3)


REX=3 is used for Civil Structures. Note that setting REX=1, 2 and 3 is not the Option 1, 2 and 3 mentioned in Model Description and in this page.


Figure below shows the steps to open the Revit file and run ICDAS Addin.


a/ Start Revit. At Recent Files window press Add-ins tab

b/ Click External Tools (which appear only when an add-in has been installed in Revit)

c/ Mouse on ICDAS REVIT FAMILY… for list of REX setting for which family file to be opened. Start Generic_3D_Deck.rfa   the first time since REX=1 is set in Excel input. All Revit files are in working folder. You can also open Excel input and     pdf manuals from here

Once the Revit family file opened, press the above addin to automate the model in Revit. Press Z+E to zoom the model in the center. When you have modified input in Excel file, remember to save the Excel file. In Revit press Ctrl+Z to undo the last creation and run the addin again. Each running will generate the entire model again, even for a single change in input. Regeneration is very fast; therefore, it is recommended to change few inputs a time to keep control over what you have modified.


Selection REX=3 is only available when Civil Structures addin 2019 is released from Autodesk. ICDAS COB will then be updated for this option. Selections REX=1 and 2 automate 3D Deck and Pier model in your family files, respectively. You need to load these family files in project file for the bridge. It will be shown in Concrete Bridge User's Manual.


Once 3D model appears in project file, all 2D layouts for dimensions will be automatically update for the changes in 3D model. You can create 2D sections normally as done for a building.

Each running addin in Revit will automate a LusasCOB.cmd file concurrently. Refer 
Analysis model to import LusasCOB.cmd in Lusas.


ICDAS COB The Three Options for Information Model in Revit


ICDAS COB provides three options for creation of the bridge deck geometry depended on case of alignment, cross section and about 3D reinforcement in concrete bridge deck. The three methods are known as ICDAS Revit Family, ICDAS Civil Structures and ICDAS Dynamo BIM4Struc V1.2.1. All are useful for bridges with curved alignments. In case of rectilinear alignment, or circular arc the first option is fastest since you can directly work on Revit interface using ICDAS COB Addin without the needs of Civil Structures and Dynamo scripts. In all cases, you need to enter ICDAS input for the analysis model in LUSAS, if needed.  


Case of the bridge alignments and the deck cross sections for the Revit model are listing below. 


ICDAS Revit Family


The road corridor is not needed as input for the deck geometry, so far the alignment is rectilinear, or circular

arc in Floor plan, and the longitudinal profile has a slope, but not a curved line (it is OK for Lusas model with

longitudinal profile in circular arc). You can directly create the deck in Revit relative coordinate. Then assign global coordinate and angle to the true north at Revit Project Base Point, normally the start point (station) of the deck, at

the STL center of the cross-section. The case of complicated curved alignment, (X, Y, Z) points report needed for 1m step wise along the center alignment. This report is created from Civil3D/Bentley for the bridge overpass. And the user need to use ICDAS Revit Bridge Manual to create the bridge manually.


This option allows unlimited number of slopes on top of deck, and any needed profile of cross section incl. box

girder. See example for this option.


ICDAS 3D reinforcements are OK with Dynamo scripts the case of curved bridge deck.

See also example for Free Form Rebar directly since Revit 2018.1.



ICDAS Revit Civil Structure


Revit Civil Structure 2019 needed to be in integration with Civil 3D for creation of the bridge, incl. abutments
and piers (not yet released from Autodesk, pt. 02-06-2018). You need at least in Civil 3D to design the road corridor overpass (or import an existing terrain model from MicroStation InRoads/InRails). Note that Revit need only the road corridor overpass from terrain model (the road center line STL, the left edge line and the right edge line as the two inner lines of the two edge beams. And the thickness 110mm of the road corridor as the pavement above the concrete deck created in Revit). Revit can also detect the road underpass and geometrical surface, but not necessary for creation of the bridge where the underpass levels of the pier foundations can be input manually. See example for this option in Revit Civil Structure 2017.


3D reinforcement need some additional works for using Dynamo scripts (ICDAS Manual)



ICDAS Dynamo BIM4Struct


This option requires the road corridor as described above, but provide only one slope on each side of the cross

section, p.t Dynamo V1.2.1. There is no pavement created on top of concrete deck but the deck is positioning in

parametric distance below top of pavement (e.g. 110mm)See example for this option.


ICDAS 3D reinforcements are OK with Dynamo scripts.
See also example for Free Form Rebar directly since Revit 2018.1.



For all cases ICDAS Bridge Libraries provide further a large options of foundations, piles, piers, and bearings which

are predesigned ready to load into any project file. 


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Updated 11-08-2023

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