Bridge analysis, design + assessment

Software Tour

LUSAS Bridge / Bridge plus

LUSAS Bridge is a world-leading finite element analysis software application for the analysis, design and assessment of all types of bridge structures. 

Whether you need to carry out a straightforward linear static analysis of a single span road bridge, a dynamic analysis of a slender architectural steel movable footbridge, or a detailed geometrically nonlinear staged erection analysis of a major cable stayed structure involving concrete creep and shrinkage, LUSAS Bridge provides all the facilities you need. 

Extensive results processing, viewing and report generation facilities give you ultimate control over what you plot and print from your analysis. In short, LUSAS Bridge software handles simple grid/grillage and slab structures with ease and has a full range of additional software options and features for more advanced bridge structures.

Many real-life illustrative uses of the software can be seen by visiting our bridge engineering case studies page.


Why use LUSAS Bridge?

  • Benefit from the use of cost-effective structural modelling and analysis (including soil-structure interaction) of any structure in one software package, and then extend your workflow into design.
  • Build global and local models that are feature-based and allow mixing of element types in the same model. 
  • Carry out advanced nonlinear geometry, material and contact modelling.
  • Customise the software to your needs using the LUSAS Programmable Interface.
  • LUSAS is a long-established and trusted provider to industry leaders, and LUSAS Technical Support is stated, by its users, to be simply: "The best in the business."

For all bridge types:
  • Slab decks
  • Slab / beam decks
  • Composite decks
  • Straight or curved plate girders
  • Masonry arches
  • Integral bridges
  • Truss bridges
  • Ribbon bridges
  • Movable bridges
  • Cable stayed bridges
  • Suspension bridges
Used for:
  • Innovative new design
  • Cost-saving re-design
  • Load rating and assessments
  • When design codes canít be used
  • Development of retrofit solutions
  • Erection / demolition engineering

Typical bridge applications

Click an image to find out more.

Software products

LUSAS Bridge is available in a choice of software levels; Bridge LT, Bridge, and Bridge Plus to suit your analysis needs. Each uses the same Windows user interface, and has modelling wizards, comprehensive vehicle loading and Smart Combination facilities for easy and rapid model generation, load application and combining of loadcase results.

  • All levels of the products use the same user interface and terminology, so training costs can be minimised and users can be introduced to LUSAS at the most appropriate level for the work they need to do. 

  • There is also full data compatibility across the product range allowing easy migration of a model to a more advanced analysis when required without any data conversion or remodelling.

  • Separate details list the capabilities of each particular software product. See how the products compare.


  • Use Bridge LT for linear static analysis of structural frames and grillages. 

  • Use Bridge for linear static and linear modal dynamic analysis of shell and solid models. 

  • Use Bridge Plus for more advanced analyses using the appropriate purchased option(s).

Element sets

Element set Bridge LT Bridge Bridge Plus
2D/3D line elements (bars, beams, grillages...)
2D/3D surface and volume elements, others...  
Advanced high-performance elements    

= Element set is included in this software product.


Software options

Extend the finite element analysis capabilities of particular LUSAS Bridge software products by purchasing additional software options.

   LUSAS software products

LUSAS software option

Bridge LT Bridge Bridge Plus
Fast Solvers
Vehicle Load Optimisation
Steel Frame Design
RC Frame Design
Composite Deck Design
IMDPlus Analysis n/a
Nonlinear Analysis n/a n/a
Dynamic Analysis n/a n/a
Thermal / Field Analysis n/a n/a
Heat of Hydration Analysis n/a n/a
Rail Track Analysis n/a n/a
Key to table
= Software option is included in this software product for new sales.
= Software option must be purchased for use with this software product. 
 n/a  = Software option not available for use with this software product.
Contact for more details.


Global coverage and support

LUSAS software is marketed and supported globally by LUSAS and also through a network of distributors and resellers that cover every continent.

Used by thousands of users, LUSAS is highly regarded in the civil, structural and bridge engineering industries, as demonstrated by an impressive list of clients, which include many of the top international consultancies. LUSAS is also used extensively by government agencies, local authorities and smaller to medium-size consultants, many of whom find that the advanced analysis facilities not only expand their capabilities but also give them a competitive edge. 

Universities and research institutions throughout the world use the academic version of LUSAS, which provides a steady supply of proficient LUSAS users to support your use of the software in your industry.

Some typical user quotes

"LUSAS has the best support in the industry. Itís not even close with the other software companies. " (Brian L.)"

"The LUSAS team provide us with the best support I have experienced from any provider. You have gone to a great effort to build a trusted relationship. Your technical support is excellent and appreciated." " (John M.)

"I was impressed with the LUSAS help desk. The responses were very detailed, informative and helpful." (Sarah R.)

Modelling with LUSAS

Find out more

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Software Information

  Bridge / Bridge plus
green_arrow.gif (94 bytes) Software overview
green_arrow.gif (94 bytes) Modelling in general
green_arrow.gif (94 bytes) Advanced elements, materials and solvers
green_arrow.gif (94 bytes) Load types and combinations
green_arrow.gif (94 bytes) Staged construction modelling
green_arrow.gif (94 bytes) Geotechnical / Soil-structure modelling
green_arrow.gif (94 bytes) Analysis and design
green_arrow.gif (94 bytes) Design code facilities
green_arrow.gif (94 bytes) Viewing results
green_arrow.gif (94 bytes) Software customisation

  Bridge LT
green_arrow.gif (94 bytes) Software overview

  Choosing software
green_arrow.gif (94 bytes) Software products
green_arrow.gif (94 bytes) LUSAS Bridge LT
green_arrow.gif (94 bytes) LUSAS Bridge
green_arrow.gif (94 bytes) LUSAS Bridge Plus
green_arrow.gif (94 bytes) Software selection
green_arrow.gif (94 bytes) Software options

green_arrow.gif (94 bytes) Videos
green_arrow.gif (94 bytes) Case studies

  Application areas
green_arrow.gif (94 bytes) Footbridge design
green_arrow.gif (94 bytes) Movable structures
green_arrow.gif (94 bytes) Rail solutions
green_arrow.gif (94 bytes) Arch bridges
green_arrow.gif (94 bytes) Major crossings
green_arrow.gif (94 bytes) Soil-Structure Interaction Modelling

  Additional information
green_arrow.gif (94 bytes) Linear and nonlinear buckling analysis
green_arrow.gif (94 bytes) Curved girder analysis
green_arrow.gif (94 bytes) Integral or jointless bridges
green_arrow.gif (94 bytes) Post-tensioning
green_arrow.gif (94 bytes) Concrete modelling
green_arrow.gif (94 bytes) Interactive Modal Dynamics
green_arrow.gif (94 bytes) LUSAS Programmable Interface (LPI)

  General information
green_arrow.gif (94 bytes) Hardware specification
green_arrow.gif (94 bytes) Licencing and Networking options
green_arrow.gif (94 bytes) Software prices
green_arrow.gif (94 bytes) Documentation
green_arrow.gif (94 bytes) Links page

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LUSAS is a trademark and trading name of Finite Element Analysis Ltd. Copyright 1982 - 2024. Last modified: March 09, 2023. Privacy policy. 
Any modelling, design and analysis capabilities described are dependent upon the LUSAS software product, version and option in use.