BRIDGE ENGINEERING STARTS HERE

THE #1 SOFTWARE FOR COMPLEX BRIDGE LEADERS Analysis Scenarios enables all analysis types within the same run of analysis Full geometric & material nonlinearity within Stage Construction Analysis Industry leading Bridge Path Coordinate Systems simplify complex alignments AASHTO, Australian, Eurocode, fib MC2010, Indian Roads Congress design codes

STEEL GIRDER BRIDGE DESIGN & RATING Rapidly Model Complex Alignments Transparent Code Check & Load Rating Automatic Design Lane Placement Industry Leading Live Load Analysis Slider Image

The LARSA 4D Difference

At LARSA, we've spent the last three decades leading the field of bridge engineering software with the latest computing technologies produced to the highest standards of quality. During this time we've developed a way of doing things that we call The LARSA 4D Difference.

It's about an unwavering commitment to all steps that go into the development of our software, and the ever-changing needs of the bridge engineering community supported by LARSA's staff of engineers and researchers that are highly specialized, yet very collaborative. But most of all it's about our commitment to deliver the highest degree of customer satisfaction to our clients, who believe there's a better way of doing things.

LARSA 4D Version 2023.R1

LARSA 4D 2023.R1 is the first major release in 2023. The version includes numerous improvements throughout LARSA 4D and LARSA 4D’s new Inter-Suite and C-Suite product additions supporting interoperability and integrated design for concrete components. Visit LARSA 4D's product download page for more information.

2023 New Product Additions

LARSA 4D C-Suite

LARSA 4D C-Suite is a design expansion for LARSA 4D BRIDGE SERIES integrating analysis and design capabilities for concrete components. Rapidly perform Biaxial Interaction Analysis, Moment Curvature Analysis, and detailed code checks for reinforced and pre- and post-tensioned concrete structures, including pier columns.

LARSA 4D AOM Pile Foundation Modeler

The LARSA 4D AOM Pile Foundation Modeler is a tool for the modeling and analysis of pile foundations based on the principles of soil structure interaction. The tool uses parametric input to rapidly generate analytical models of one or more pile foundations that can be analyzed directly within the Modeler or exported to LARSA 4D.

Product Videos

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View the full catalogue of LARSA 4D Videos.

Sort and search videos by topic including for analysis, code check and load rating, modeling, product features, tutorial videos and more.

January 2023

LARSA 4D Pier Code Check Tool

The LARSA 4D Pier Code Check Tool enables detailed design checks on Material Properties, Reinforcement Limits, Shear Capacity, Transverse Reinforcement Requirements, Longitudinal Reinforcement Limits, and Control of Cracking of Pier Columns.

May 2022

LARSA 4D Live Load Analysis

LARSA 4D live load analysis supports influence lines and influence surfaces. LARSA 4D’s load positioning solver combined with influence-surfaces and compound element forces allows engineers to accurately and rapidly perform refined live load analysis.

February 2022

LARSA 4D Staged Construction Analysis

LARSA 4D performs multiple static and dynamic analyses such as eigenvalue, response spectra, linear and nonlinear time-history, or pushover at any stage within the same run of stage construction analysis, including with or without time-dependent effects. LARSA 4D is the industry's first and foremost staged construction analysis engine.

January 2022

LARSA 4D Nonprismatic Variation

This video introduces how to rapidly create nonprismatic variation in LARSA 4D and the LARSA 4D Section Composer Tool. LARSA 4D BRIDGE SERIES is an advanced 3D finite element based structural analysis and design program for bridges with industry leading specializations for concrete segmental bridges.

September 2021

LARSA 4D Steel Bridge Module

The LARSA 4D Steel Bridge Module quickly generates refined 3D FEA models of I, Box, and Tub steel girder bridges compliant for AASHTO Bridge Design Specifications. The Module provides industry leading solutions for parametric design and rating of straight and curved steel girder bridges with complex alignments.

Upcoming Events

Visit LARSA's LinkedIn page to stay up to date with our upcoming events and latest news.

New York City Bridge Conference

August 21-23, 2023

New York, New York

2023 WBES

September 05-08, 2023

Phoenix, Arizona

ASBI 35th Annual Convention

November 05-08, 2023

Tucson, Arizona

Analysis & Design

Preloaded with the innovative tools necessary to support the life of a bridge project from design to construction, bridge engineering professionals rely on LARSA 4D to deliver the most trusted solution for simple short-span to demanding long-span bridge projects.